I recently got my legend up and running again. You can get most of the parts you need straight from infinity, just shoot him an email
Ive upgraded mine abit. I have all the upgrades that you can get from glen@infinity (soft face bolt, thin grips, clamping feedneck etc). I use the Violent SL3 regulator instead of the CP one. Clone VX detents because they last a long time but are still soft on the paint. And a POPS ASA from planet eclipse. I allso use the Rhino sping. The rutley bolt system looks good but is costly and largely untested, I would get it at a later stage when the kinks have been ironed out and it has proven itself.
I dont think they have color kits anymore though. You can reach glenn here -> email@example.com
or at the email listed on the site. Ive used both.
Good luck! And feel free to ask away if there is anything else. ( Allso a top tip, if you order parts, get some eyecovers and a set of eyes/wire harness. Those parts will break, its just a matter of time and they are only a few dollars )