With the CC the best way to do it is to remove the facia part of it, pull the temp control knob off and undo the bolt, unclip the plastic facia.
On a firm surface with light pressure, push the clear plastic LCD cover from behind, if you heat the plastic slightly with a hair dryer it will loosen the glue holding the screen making it very quick to do.
Unclip the shroud behind the temp dial. Slice the tabs holding the red and blue temp indicator plastic, push them out. You'll now have just the facia making it a breeze to paint as it doesn't need any masking.
When fitting again put some small dots of super glue on rim where the plastic LCD cover fits, that'll hold it back again, same for the temperature indicator plastics, put them in then blob hot melt glue over the tabs you cut, perfect!