input-sources: add color settings for status icon

Add background and foreground color settings for status icon.

data/schemas/org.gnome.gnome-flashback.gschema.xml

@@ -86,6 +86,7 @@
     </key>
 
     <child name="desktop-background" schema="org.gnome.gnome-flashback.desktop-background"/>
+    <child name="input-sources" schema="org.gnome.gnome-flashback.input-sources"/>
     <child name="workarounds" schema="org.gnome.gnome-flashback.workarounds"/>
   </schema>
 
@@ -99,6 +100,22 @@
 
   </schema>
 
+  <schema id="org.gnome.gnome-flashback.input-sources" path="/org/gnome/gnome-flashback/input-sources/">
+
+      <key name="status-icon-bg-color" type="s">
+          <default>'#FFFFFF'</default>
+          <summary>The background color for the status icon.</summary>
+          <description>This contains the background color for the status icon that is shown in the system tray.</description>
+      </key>
+
+      <key name="status-icon-fg-color" type="s">
+          <default>'#000000'</default>
+          <summary>The foreground color for the status icon.</summary>
+          <description>This contains the foreground color for the status icon that is shown in the system tray.</description>
+      </key>
+
+  </schema>
+
   <schema id="org.gnome.gnome-flashback.workarounds" path="/org/gnome/gnome-flashback/workarounds/">
 
     <key name="fix-app-menu" type="b">