[Gtk-sharp-list] It there any widget in Gtk# able to change its color?

[Antonio Martínez Alvarez]

Hello friends.

I need I simple widget in Gtk# able to change its color. It must be 
supported both in Linux and Windows.
I need it to represent a mxn matrix and I want to represent every matrix 
element by mean of a color.
Any possible widget could bee Button... or Frame (more simple) but I'm 
not able to change its color !!!!

What's the way to do so?

Thanks in advance.

--
Antonio Martínez