[Vala] Gtk Custom widget: drawing with "gtk theme" colours

[Harry Van Haaren <harryhaaren gmail com>]

Hey All,

I've designed a couple of widgets now, (in various languanges: python C++
Vala)
and googled for many tutorials regarding how to draw custom widgets in the
GTK theme
colours. I havent found any example code, or tutorial yet...

I hope somebody has a pointer on how I can "extract" the colours from the
current theme?
Cheers, -Harry