Coloured house (6)
I believe the answer is:
orange
I believe this is a double definition.
'coloured' is the first definition.
(similar in meaning)
'house' is the second definition.
(Dutch royal house, as in William of Orange)
(Other definitions for orange that I've seen before include "Belisha beacon colour" , "Colour of an onager?" , "Go near (anag) - fruit" , "shade" , "Colour of Northern Ireland unionism" .)