Colour prevalent in German houses (5)
I believe the answer is:
tinge
'colour' is the definition.
(I know that colour is a action)
'prevalent in german houses' is the wordplay.
'houses' says the answer is hidden in the clue (part of the clue houses the answer).
'TINGE' is hidden within 'prevalent in german'.
(Other definitions for tinge that I've seen before include "A suspicion" , "Hint of colour" , "Subdued colour" , "Get in (anag)" , "Slight but perceptible amount" .)