It depends on which version like Smaxxin said. But none are red or blue until they are painted, lol. They will all be white. The original version has a chevy emblem on the grill, and cheverolet written on the tailgate. The second version will have nothing on the grill or tailgate. The third version, actually called the superclodbuster, has 4x4x4 on the grill and nothing on the tailgate, it also has a different blower and decal set than the two previos versions. The most valuable version would be the first, with the chevy emblems. For $50 nib you got a good deal, the super still sells on Tower for around $170. If it is the first version new in box, leave it that way, vintage tamiya kits are quite valuable.
You could part it out too, axles will get usually in the area of $100 for the pair, and you can get about $40 for the hardbody, unless it has the chevy emblems, then you could get a bit more.