Dug this out of my mongoose catalogue pics for you mate
If you read the info panel to the left it looks like they came in original paint finishes of black,red or blue as well as the chrome finish - no white though
guess yours will be a custom job then
Hope the pic helps you with your build
Can't really help much more than that mate cos it's all about mongoose for me.
kev (kdw712) and matt (swivel) are good for ammaco info though mate - sure they'll help you out if you PM them - kev (kdw712) also has a website with loads of various archived catalogue and magazine pics etc. you may find some stuff there too - here's the link :
http://uk.geocities.com/kdw_712/Welcome to the site