using GHIElectronics.TinyCLR.UI;
window1.Background = new SolidColorBrush(GHIElectronics.TinyCLR.UI.Media.Color.FromRgb(255, 0, 0));
//Window 1 is Blue
window1.Background = new SolidColorBrush(GHIElectronics.TinyCLR.UI.Media.Color.FromRgb(0, 255, 0));
//Window 2 is Green
window1.Background = new SolidColorBrush(GHIElectronics.TinyCLR.UI.Media.Color.FromRgb(0, 0, 255));
//Window 1 is Red
Thought I would let you know.