Use color palette.

imports/Spectral/Panel/RoomHeader.qml

@@ -6,6 +6,7 @@ import QtQuick.Controls.Material 2.4
 import Spectral 0.1
 import Spectral.Effect 2.0
 import Spectral.Component 2.0
+import Spectral.Setting 0.1
 
 Control {
     property alias avatar: headerImage.source
@@ -53,6 +54,7 @@ Control {
                 Layout.fillHeight: true
 
                 text: currentRoom ? currentRoom.displayName : ""
+                color: MPalette.foreground
                 font.pixelSize: 16
                 elide: Text.ElideRight
                 wrapMode: Text.NoWrap
@@ -64,7 +66,7 @@ Control {
 
                 id: headerTopicLabel
 
-                color: "#5B7480"
+                color: MPalette.lighter
                 elide: Text.ElideRight
                 wrapMode: Text.NoWrap
             }

imports/Spectral/Panel/RoomListPanel.qml

@@ -12,7 +12,7 @@ import Spectral.Setting 0.1
 
 import SortFilterProxyModel 0.2
 
-Rectangle {
+Item {
     property var controller: null
     readonly property var user: controller.connection ? controller.connection.localUser : null
 
@@ -25,8 +25,6 @@ Rectangle {
 
     id: root
 
-    color: MSettings.darkTheme ? "#303030" : "#FFFFFF"
-
     RoomListModel {
         id: roomListModel
 
@@ -638,6 +636,7 @@ Rectangle {
                     topPadding: 0
                     bottomPadding: 0
                     placeholderText: "Search..."
+                    color: MPalette.lighter
 
                     background: Item {}
                 }
@@ -779,6 +778,7 @@ Rectangle {
                             Layout.fillHeight: true
 
                             text: name || "No Name"
+                            color: MPalette.foreground
                             font.pixelSize: 16
                             elide: Text.ElideRight
                             wrapMode: Text.NoWrap
@@ -789,7 +789,7 @@ Rectangle {
                             Layout.fillHeight: true
 
                             text: (lastEvent == "" ? topic : lastEvent).replace(/(\r\n\t|\n|\r\t)/gm,"")
-                            color: "#5B7480"
+                            color: MPalette.lighter
                             font.pixelSize: 13
                             elide: Text.ElideRight
                             wrapMode: Text.NoWrap
@@ -855,7 +855,7 @@ Rectangle {
                 height: 24
 
                 text: section
-                color: "#5B7480"
+                color: MPalette.lighter
                 leftPadding: 16
                 elide: Text.ElideRight
                 verticalAlignment: Text.AlignVCenter
@@ -894,7 +894,7 @@ Rectangle {
             }
 
             Button {
-                text: "Reject"
+                text: "Cancel"
                 flat: true
 
                 onClicked: inviteDialog.close()