andy hi mate you should be ok to get what you need from darren at dms buddy hes my supplier and has fascolour in stock and paint mask too mate
if ya want createx ultra fast then
www.everythingairbrush.com/ do stock it as for the colours the greens are the hardest so these are the ones that ll match key lime green for the back faslucent green for the edge of the key lime and then flow green for the lighte green but just do a dust coating a few times ,,, obvoiusly black and white and if you want some serious chrome then rcs /// jonny miller does some awesome chrome that stick so well ,, get it done mate good luck and post some piccies up , if you cant get any colours give me a shout cheers dude