IncDecButton Slider - change colour?

Is it possible to change the colour of the buttons which are part of the IncDecButtons Slider style?
I’ve had a look and tried out the sliderColourIDs and buttonColourIDs but had no luck so far.

Sorry please ignore this thread - I appear to have posted before I tried to find the answer properly myself!
TextButton::buttonColourID turned out to be the colourID I was looking for.
I’ll try and be more responsible with my posting next time!