GDI+

http://tech.ddvip.com/2008-09/122095148662296_3.html
http://www.codeproject.com/KB/graphics/gditutorial.aspx
http://www.codeproject.com/KB/graphics/transbitmapmask.aspx

color matrix:
http://blog.csdn.net/sky04/archive/2008/12/22/3584046.aspx