Mmm, tricky - white is the colour of the moment and was really rare a year or two ago, looks fab but is it going to have had its day soon? How long you planning on keeping the car? Red is a colour i've always hated until recently when the depth of them has become amazing - the one red zed we had at wales looked outstanding and was my fave car there! Yellow another good choice for something to turn heads but may be a bit marmite for resale? In answer to your question then - DUNNO!