DigiKam is a nice photo editor and not too shabby for keeping your photo collections in. However I am not here to promote the program, this is a KDE color scheme for you who are already using it, since one of its nice features is to use any color scheme you have stored in your system settings.
The idea with this theme is that it's supposed to be used together with my KDE color scheme "Lightning Unified Orange", so you'll get a darker more photo friendly view in DigiKam but keeping the look of the window etc.
I am using Lightning Unified Orange and my QtCurve theme in the screen shots.
Links to them are here: