Color space of experimental WebBrowser Widget wrong ?

Hi,

I want to show a webbrowser in my visualization using a 3D-widget. However the colors are bleached and won’t respond to the actual colors. I assume some sort of color-space conversion problem, but I was unable to fix it so far.

Rendering using Firefox it looks like this:

Using the engine it looks like this:
web_engine.png

Can anybody help me with this ?

Cheers !