Colour scheme is all wrong on the one posted above, but it does look good in 3 doorÂ

Here's the scheme VW followed:
Colour 1: rear quarters, roof, sills
Colour 2: front bumper, front doors, front mirrors
Colour 3: bonnet, rear doors [not applicable for 3 door], rear bumper
Colour 4: front wings
The rear hatch, from what I've seen in pictures, matched either the front wings or the front doors, so colour 4 or colour 2.
The grille usually matched the front wings or the rear quarters, so colour 4 or colour 1.
It seems a bit anal but the method they used made all the colours on the official harlequins really stand out without anything looking out of place or randomly painted. It works really well. Hope that helpsÂ

EDIT: made a mistake.