This is awesome! Thank you so much!
One thing to keep in mind: I saw at least a couple of things that weren't correct on the MLBcollectors.com site. For the Astros, the 1972 home shows a blue namplate with orange numbers. The Astros never had that combo. The '76 uniforms show numbers with a varsity number font and a white outline. That's incorrect. The '76 uniforms had a circus-style number font without an outline.
For uniforms from 1970 to the present, check Bill Henderson's Game Worn Guides. If you don't have it, I think it costs about $40, and it's an outstanding and accurate source of uniform documentation.