Lucky for you, only the black TPR (OTB) was used on the entire series of five (excluding the short 146/246 fillets I think), and then usually with the DU insert in the shield cavity. Three knives were made in the orange TPR (OTO), two in the Burgandy TPR (OT?), and one in the blue TPR (OTBU). Really, you only need one of each color to have a representative set, another four total, but a comprehensive set would be eleven more. Overkill, IMHO. The 147 pattern might be easiest to acquire the odd colors in, excepting the blue which was only made in the 141OT pattern, IIRC. If you wanted all of the colors in a single pattern, the 141OT is your best bet, except...I've only seen a couple of them in Burgandy so far.
Codger