Created attachment 58945 [details]
Screenshot of the installer on Windows XP.
I think the header of the installation dialog on Windows should have an white background, not gray.
Created attachment 58946 [details]
Screenshot of the installer on Windows 7.
Yeah, why not. It will look slightly better.
Andras Timar committed a patch related to this issue.
It has been pushed to "master":
fdo#47779 installer dialog header background should be white