Howto change window colours in GNOME3

[Michael Cronenworth]

Jouk Jansen wrote:
> How can I change the colour scheme of the windows in GNOME3? (I hate the
> greyish colours and my eyes are more suited to some other colours) In GNOME2
> I could do this with the gnome-appearance-properties, which seems to be
> absent in GNOME3. I tried the gnome-tweak-tool, but that one only allows for
> different themes, but not the colour schems of the themes.

Themes do not have multiple color packs or schemes. One theme has one 
color scheme.