great, thanks guys.. turned out to be the QPalette::Base colour. I missed this little snippet in the documentation:

Qt Code:
  1. Used mostly as the background color for text entry widgets, but can also be used
  2. for other painting - such as the background of combobox drop down lists and toolbar
  3. handles. It is usually white or another light color.
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and no i didn't know about style sheets, will definately read up on them for my next project.. i've done too much qstyle work on this one to change over