diff --git a/libnymea-app/rulemanager.cpp b/libnymea-app/rulemanager.cpp
index e344fb93..5747faf2 100644
--- a/libnymea-app/rulemanager.cpp
+++ b/libnymea-app/rulemanager.cpp
@@ -427,7 +427,7 @@ QVariantList RuleManager::packEventDescriptors(EventDescriptors *eventDescriptor
             QVariantList paramDescriptors;
             for (int j = 0; j < eventDescriptor->paramDescriptors()->rowCount(); j++) {
                 QVariantMap paramDescriptor;
-                if (!eventDescriptor->paramDescriptors()->get(j)->paramTypeId().isEmpty()) {
+                if (!eventDescriptor->paramDescriptors()->get(j)->paramTypeId().isNull()) {
                     paramDescriptor.insert("paramTypeId", eventDescriptor->paramDescriptors()->get(j)->paramTypeId());
                 } else {
                     paramDescriptor.insert("paramName", eventDescriptor->paramDescriptors()->get(j)->paramName());
diff --git a/libnymea-app/types/actiontypes.cpp b/libnymea-app/types/actiontypes.cpp
index 14972811..0ae3c23e 100644
--- a/libnymea-app/types/actiontypes.cpp
+++ b/libnymea-app/types/actiontypes.cpp
@@ -49,7 +49,6 @@ ActionType *ActionTypes::get(int index) const
 ActionType *ActionTypes::getActionType(const QUuid &actionTypeId) const
 {
     foreach (ActionType *actionType, m_actionTypes) {
-        qDebug() << "checking:" << actionType->id();
         if (actionType->id() == actionTypeId) {
             return actionType;
         }
diff --git a/libnymea-app/types/param.cpp b/libnymea-app/types/param.cpp
index 7ca55ad5..6c57ce92 100644
--- a/libnymea-app/types/param.cpp
+++ b/libnymea-app/types/param.cpp
@@ -30,7 +30,7 @@
 
 #include "param.h"
 
-Param::Param(const QString &paramTypeId, const QVariant &value, QObject *parent) :
+Param::Param(const QUuid &paramTypeId, const QVariant &value, QObject *parent) :
     QObject(parent),
     m_paramTypeId(paramTypeId),
     m_value(value)
@@ -43,12 +43,12 @@ Param::Param(QObject *parent):
 
 }
 
-QString Param::paramTypeId() const
+QUuid Param::paramTypeId() const
 {
     return m_paramTypeId;
 }
 
-void Param::setParamTypeId(const QString &paramTypeId)
+void Param::setParamTypeId(const QUuid &paramTypeId)
 {
     if (m_paramTypeId != paramTypeId) {
         m_paramTypeId = paramTypeId;
diff --git a/libnymea-app/types/param.h b/libnymea-app/types/param.h
index 9f0971a5..5a421b2d 100644
--- a/libnymea-app/types/param.h
+++ b/libnymea-app/types/param.h
@@ -32,21 +32,21 @@
 #define PARAM_H
 
 #include <QObject>
-#include <QString>
+#include <QUuid>
 #include <QVariant>
 
 class Param : public QObject
 {
     Q_OBJECT
-    Q_PROPERTY(QString paramTypeId READ paramTypeId WRITE setParamTypeId NOTIFY paramTypeIdChanged)
+    Q_PROPERTY(QUuid paramTypeId READ paramTypeId WRITE setParamTypeId NOTIFY paramTypeIdChanged)
     Q_PROPERTY(QVariant value READ value WRITE setValue NOTIFY valueChanged)
 
 public:
-    Param(const QString &paramTypeId = QString(), const QVariant &value = QVariant(), QObject *parent = nullptr);
+    Param(const QUuid &paramTypeId = QString(), const QVariant &value = QVariant(), QObject *parent = nullptr);
     Param(QObject *parent);
 
-    QString paramTypeId() const;
-    void setParamTypeId(const QString &paramTypeId);
+    QUuid paramTypeId() const;
+    void setParamTypeId(const QUuid &paramTypeId);
 
     QVariant value() const;
     void setValue(const QVariant &value);
@@ -56,7 +56,7 @@ signals:
     void valueChanged();
 
 protected:
-    QString m_paramTypeId;
+    QUuid m_paramTypeId;
     QVariant m_value;
 };
 
diff --git a/libnymea-app/types/paramtypes.cpp b/libnymea-app/types/paramtypes.cpp
index b2c05fec..9192b2ad 100644
--- a/libnymea-app/types/paramtypes.cpp
+++ b/libnymea-app/types/paramtypes.cpp
@@ -48,10 +48,10 @@ ParamType *ParamTypes::get(int index) const
     return nullptr;
 }
 
-ParamType *ParamTypes::getParamType(const QString &id) const
+ParamType *ParamTypes::getParamType(const QUuid &id) const
 {
     foreach (ParamType *paramType, m_paramTypes) {
-        if (paramType->id() == QUuid(id)) {
+        if (paramType->id() == id) {
             return paramType;
         }
     }
diff --git a/libnymea-app/types/paramtypes.h b/libnymea-app/types/paramtypes.h
index 1e5f6efe..2337b278 100644
--- a/libnymea-app/types/paramtypes.h
+++ b/libnymea-app/types/paramtypes.h
@@ -59,7 +59,7 @@ public:
     QList<ParamType *> paramTypes();
 
     Q_INVOKABLE ParamType *get(int index) const;
-    Q_INVOKABLE ParamType *getParamType(const QString &id) const;
+    Q_INVOKABLE ParamType *getParamType(const QUuid &id) const;
     Q_INVOKABLE ParamType *findByName(const QString &name) const;
 
     int rowCount(const QModelIndex & parent = QModelIndex()) const;
diff --git a/libnymea-app/types/ruleactionparams.cpp b/libnymea-app/types/ruleactionparams.cpp
index 7dd13bfa..e75aae2a 100644
--- a/libnymea-app/types/ruleactionparams.cpp
+++ b/libnymea-app/types/ruleactionparams.cpp
@@ -74,9 +74,10 @@ void RuleActionParams::addRuleActionParam(RuleActionParam *ruleActionParam)
     beginInsertRows(QModelIndex(), m_list.count(), m_list.count());
     m_list.append(ruleActionParam);
     endInsertRows();
+    emit countChanged();
 }
 
-void RuleActionParams::setRuleActionParam(const QString &paramTypeId, const QVariant &value)
+void RuleActionParams::setRuleActionParam(const QUuid &paramTypeId, const QVariant &value)
 {
     foreach (RuleActionParam *rap, m_list) {
         if (rap->paramTypeId() == paramTypeId) {
@@ -174,6 +175,9 @@ void RuleActionParams::setRuleActionParamStateByName(const QString &paramName, c
 
 RuleActionParam *RuleActionParams::get(int index) const
 {
+    if (index < 0 || index >= m_list.count()) {
+        return nullptr;
+    }
     return m_list.at(index);
 }
 
@@ -187,6 +191,15 @@ bool RuleActionParams::hasRuleActionParam(const QString &paramTypeId) const
     return false;
 }
 
+void RuleActionParams::clear()
+{
+    beginResetModel();
+    qDeleteAll(m_list);
+    m_list.clear();
+    endResetModel();
+    emit countChanged();
+}
+
 bool RuleActionParams::operator==(RuleActionParams *other) const
 {
     if (rowCount() != other->rowCount()) {
diff --git a/libnymea-app/types/ruleactionparams.h b/libnymea-app/types/ruleactionparams.h
index 013b10cb..2e6fcd07 100644
--- a/libnymea-app/types/ruleactionparams.h
+++ b/libnymea-app/types/ruleactionparams.h
@@ -56,7 +56,7 @@ public:
 
     void addRuleActionParam(RuleActionParam* ruleActionParam);
 
-    Q_INVOKABLE void setRuleActionParam(const QString &paramTypeId, const QVariant &value);
+    Q_INVOKABLE void setRuleActionParam(const QUuid &paramTypeId, const QVariant &value);
     Q_INVOKABLE void setRuleActionParamByName(const QString &paramName, const QVariant &value);
     Q_INVOKABLE void setRuleActionParamEvent(const QString &paramTypeId, const QString &eventTypeId, const QString &eventParamTypeId);
     Q_INVOKABLE void setRuleActionParamEventByName(const QString &paramName, const QString &eventTypeId, const QString &eventParamTypeId);
@@ -67,6 +67,8 @@ public:
 
     Q_INVOKABLE bool hasRuleActionParam(const QString &paramTypeId) const;
 
+    Q_INVOKABLE void clear();
+
     bool operator==(RuleActionParams *other) const;
 
 signals:
diff --git a/nymea-app/ui/delegates/ParamDelegate.qml b/nymea-app/ui/delegates/ParamDelegate.qml
index 41eeda1f..bf205c0a 100644
--- a/nymea-app/ui/delegates/ParamDelegate.qml
+++ b/nymea-app/ui/delegates/ParamDelegate.qml
@@ -67,7 +67,7 @@ ItemDelegate {
                 Layout.fillWidth: true// sourceComponent === textFieldComponent || sourceComponent === stringComponent
                 sourceComponent: {
                     print("Loading ParamDelegate");
-                    print("Writable:", root.writable, "type:", root.paramType.type, "min:", root.paramType.minValue, "max:", root.paramType.maxValue)
+                    print("Writable:", root.writable, "type:", root.paramType.type, "min:", root.paramType.minValue, "max:", root.paramType.maxValue, "value:", root.param.value)
                     if (!root.writable) {
                         return stringComponent;
                     }
@@ -77,6 +77,9 @@ ItemDelegate {
                         return boolComponent;
                     case "uint":
                     case "int":
+                        if (root.paramType.name == "colorTemperature") {
+                            return null;
+                        }
                     case "double":
                         if (root.paramType.allowedValues.length > 0) {
                             return comboBoxComponent;
@@ -103,13 +106,11 @@ ItemDelegate {
         Loader {
             Layout.fillWidth: true
             sourceComponent: {
+                if (root.paramType.name == "colorTemperature") {
+                    return colorTemperaturePickerComponent;
+                }
+
                 switch (root.paramType.type.toLowerCase()) {
-//                case "int":
-//                case "double":
-//                    if (root.paramType.minValue !== undefined && root.paramType.maxValue !== undefined) {
-//                        return sliderComponent
-//                    }
-//                    break;
                 case "color":
                     return colorPickerComponent
                 }
@@ -312,6 +313,32 @@ ItemDelegate {
         }
     }
 
+    Component {
+        id: colorTemperaturePickerComponent
+        ColorPickerCt {
+            id: colorPickerCt
+            implicitHeight: 50
+            minCt: root.paramType.minValue
+            maxCt: root.paramType.maxValue
+            ct: root.param.value !== undefined
+                  ? root.param.value
+                  : root.paramType.defaultValue
+                    ? root.paramType.defaultValue
+                    : root.paramType.minValue
+
+            onCtChanged: {
+                root.param.value = ct
+            }
+
+
+            touchDelegate: Rectangle {
+                height: colorPickerCt.height
+                width: 5
+                color: app.accentColor
+            }
+        }
+    }
+
     Component {
         id: colorPreviewComponent
         Rectangle {
diff --git a/nymea-app/ui/devicepages/LightDevicePage.qml b/nymea-app/ui/devicepages/LightDevicePage.qml
index de8dae6a..5cea7c52 100644
--- a/nymea-app/ui/devicepages/LightDevicePage.qml
+++ b/nymea-app/ui/devicepages/LightDevicePage.qml
@@ -220,7 +220,7 @@ DevicePageBase {
                     touchDelegate: Rectangle {
                         height: pickerCt.height
                         width: 5
-                        color: app.foregroundColor
+                        color: app.accentColor
                     }
 
                     property var lastSentTime: new Date()
diff --git a/nymea-app/ui/magic/RuleActionDelegate.qml b/nymea-app/ui/magic/RuleActionDelegate.qml
index 1bf93385..9e2e43aa 100644
--- a/nymea-app/ui/magic/RuleActionDelegate.qml
+++ b/nymea-app/ui/magic/RuleActionDelegate.qml
@@ -72,6 +72,9 @@ NymeaListItemDelegate {
                 case "bool":
                     text = ruleActionParam.value === true ? qsTr("True") : qsTr("False")
                     break;
+                case "color":
+                    text = "<font color=\"" + ruleActionParam.value + "\">⬤</font>"
+                    break;
                 default:
                     text = ruleActionParam.value
                 }
diff --git a/nymea-app/ui/magic/SelectRuleActionPage.qml b/nymea-app/ui/magic/SelectRuleActionPage.qml
index 301ba81b..eb92a319 100644
--- a/nymea-app/ui/magic/SelectRuleActionPage.qml
+++ b/nymea-app/ui/magic/SelectRuleActionPage.qml
@@ -175,7 +175,10 @@ Page {
                         } else {
                             var actionType = root.deviceClass.actionTypes.getActionType(model.actionTypeId);
                             console.log("ActionType", actionType.id, "selected. Has", actionType.paramTypes.count, "params");
-                            root.ruleAction.actionTypeId = actionType.id;
+                            if (root.ruleAction.actionTypeId !== actionType.id) {
+                                root.ruleAction.actionTypeId = actionType.id;
+                                root.ruleAction.ruleActionParams.clear();
+                            }
                             root.ruleAction.browserItemId = "";
                             root.ruleAction.interfaceAction = "";
                             if (actionType.paramTypes.count > 0) {
diff --git a/nymea-app/ui/magic/SelectRuleActionParamsPage.qml b/nymea-app/ui/magic/SelectRuleActionParamsPage.qml
index e37e79b6..4cd0d767 100644
--- a/nymea-app/ui/magic/SelectRuleActionParamsPage.qml
+++ b/nymea-app/ui/magic/SelectRuleActionParamsPage.qml
@@ -38,14 +38,14 @@ import Nymea 1.0
 Page {
     id: root
     // Needs to be set and have rule.ruleActions filled in with deviceId and actionTypeId or interfaceName and interfaceAction
-    property var ruleAction: null
+    property RuleAction ruleAction: null
 
     // optionally a rule which will be used to propose events params as param values
     property var rule: null
 
-    readonly property var device: ruleAction && ruleAction.deviceId ? engine.deviceManager.devices.getDevice(ruleAction.deviceId) : null
+    readonly property Device device: ruleAction && ruleAction.deviceId ? engine.deviceManager.devices.getDevice(ruleAction.deviceId) : null
     readonly property var iface: ruleAction && ruleAction.interfaceName ? Interfaces.findByName(ruleAction.interfaceName) : null
-    readonly property var actionType: device ? engine.deviceManager.deviceClasses.getDeviceClass(device.deviceClassId).actionTypes.getActionType(ruleAction.actionTypeId)
+    readonly property var actionType: device ? device.deviceClass.actionTypes.getActionType(ruleAction.actionTypeId)
                                             : iface ? iface.actionTypes.findByName(ruleAction.interfaceAction) : null
 
     signal backPressed();
@@ -125,6 +125,7 @@ Page {
                                 paramType: root.actionType.paramTypes.get(index)
                                 enabled: staticParamRadioButton.checked
                                 nameVisible: false
+                                value: root.ruleAction.ruleActionParams.get(index).value
                                 visible: staticParamRadioButton.checked
                                 placeholderText: qsTr("Insert value here")
                             }
diff --git a/nymea-app/ui/magic/SimpleStateEvaluatorDelegate.qml b/nymea-app/ui/magic/SimpleStateEvaluatorDelegate.qml
index fd23ed6a..1e07e7b8 100644
--- a/nymea-app/ui/magic/SimpleStateEvaluatorDelegate.qml
+++ b/nymea-app/ui/magic/SimpleStateEvaluatorDelegate.qml
@@ -63,7 +63,7 @@ SwipeDelegate {
             ColorIcon {
                 Layout.preferredHeight: childEvaluatorsRepeater.count > 0 ? app.iconSize * .6 : app.iconSize
                 Layout.preferredWidth: height
-                name: root.stateEvaluator.stateDescriptor.interfaceName.length === 0 ? "../images/state.svg" : "../images/state-interface.svg"
+                name: root.stateEvaluator && root.stateEvaluator.stateDescriptor.interfaceName.length === 0 ? "../images/state.svg" : "../images/state-interface.svg"
                 color: app.accentColor
             }