Hap is a common name, anything that isn't a mbuna or Peacock is called a Hap, but they are not a true group.
Dimidiochromis compressiceps comes in a few different colors:
Blue: http://www.thetropicaltank.co.uk/Fishindx/Fishpics/dimid_compress-male.jpg
White/Albino: http://cjexotics.com/images/albinoeyebiters.JPG
Gold: http://www.malawi.cichlids.ru/images/fishes/didmi_compressiceps_gold1.jpg
There are also fake colors too, OB Hybird, but you know, what's the point?
Dimidiochromis compressiceps comes in a few different colors:
Blue: http://www.thetropicaltank.co.uk/Fishindx/Fishpics/dimid_compress-male.jpg
White/Albino: http://cjexotics.com/images/albinoeyebiters.JPG
Gold: http://www.malawi.cichlids.ru/images/fishes/didmi_compressiceps_gold1.jpg
There are also fake colors too, OB Hybird, but you know, what's the point?