Looks pretty good to me already. You definately chose a better blue than I did (about 10 years ago)...
This is how my model looks like. The blue color is way off, but I still have the 1/12 Tyrrell AND the 1/20 1977 version, so I have 2 more chances to get it right...
My second attempt (1/32 Matchbox model) is a lot closer to the real thing I guess :
Please keep us posted! I am looking forward to your project!