There are Tamiya paint charts available here:
Here's a link to Tamiya's page of paint charts. You'll need to set your screen resolution quite large to read! (at least I do, darned aging eyes!)
http://www.tamiyausa.com/articles/feature.php?article-id=72Check your TS-49 Racing Green, that isn't listed but TS-43 is!
You might be able to get away with X-8 Lemon Yellow instead of TS-16 Yellow, and X-11 Chrome Silver instead of the TS-17 Gloss Aluminum. TS-7 Racing White is an "ivory" colour, and Tamiya bottle acrylics are definitely whiter! British Racing Green seems to be more of a problem. I don't have a lot of automotive paints, I do mostly WWII aircraft and armor. The few cars I do have I've used the rattle cans...
I did find another website with a couple of paint charts on it
http://oldbeacon.com/plans/colors/paint_charts.htmHave you tried the Scale Auto website?
http://www.scaleautomag.com/The National Racing colors were never codified as a particular shade. So basically almost and dark green could suffice. Happy hunting!