As per Vaastu Shastra, here are a few indicative ideas about the co-relation between the colours and the directions :
White appears to be a suitable colour for North – West Direction.
Green appears to be a suitable colour for North Direction.
Green or Yellow appears to be a suitable colour for North – East Direction.
Yellow appears to be a suitable colour for East Direction.
Silver or White appears to be a suitable colour for South – East Direction.
Brown or Red appears to be a suitable colour for South Direction.
Dark Brown appears to be a suitable colour for South – West Direction.
Blue appears to be a suitable colour for West Direction.
White appears to be a suitable colour for the Brahmasthana.
Fortunify 