Jeroen, could you post your RGB settings? I have a similar setup, and my brown/tans are no where near what yours is
indeed, i noticed that brown is a difficult colour for the APA102's, but soft colours like beige/pink/lila/lightblue are really nice on the APA102. '
before i had the WS2801 but this was a good ledstrip in "hard colours" but very very bad in soft colouring..
i saw the difference when i switched to the APA's