How to change the color of a #region in Visual Studio's 2008

Question

I maybe going mad, but for the life of me I can't find the option to change the colour of collapsed region's in VS2008.

For example if I have the following code:

#region Test Region

CallSomeCode();

#endregion

If I now collapse that region it has the title "Test Region" in a grey text color with a grey box around it.