videosettings: fix label's color

Change-Id: I2b0d245be5bdffc7262374187a03e2389d715113
GitLab: #608

src/mainview/components/RecordBox.qml

@@ -271,9 +271,12 @@ Rectangle {
 
         visible: (isVideo && !previewAvailable)
 
-        text: qsTr("Preview unavailable")
-        font.pointSize: 10
+        text: JamiStrings.previewUnavailable
+        font.pointSize: JamiTheme.settingsFontSize
         font.kerning: true
+        color: JamiTheme.primaryForegroundColor
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
     }
 
     Timer {

src/settingsview/components/VideoSettings.qml

@@ -243,6 +243,7 @@ ColumnLayout {
         text: JamiStrings.previewUnavailable
         font.pointSize: JamiTheme.settingsFontSize
         font.kerning: true
+        color: JamiTheme.primaryForegroundColor
 
         horizontalAlignment: Text.AlignHCenter
         verticalAlignment: Text.AlignVCenter