Android Question [ABMaterial] how to set colors from Colors.RGB?

Hi there

How does one set their own color in ABMaterial?

I would like to use Colors.RGB(255,180,0) for the icon and need a way to define my forecolor using this color. This I can do with the given colors, how do I specify my own color from Colors.RBG values? I'd also like to follow that approach and set my page background to Colors.RGB(245,245,245)

Can someone please advise? Thanks