I doubled my money on the 1990's vintage Winchester .44 Mag Trapper on Gunbroker when Winchester went Tango Uniform.
I'll have to keep an eye on Colt values if the same happens to them. I've got a '96 ban-era "Lightweight Match Target" AR, I've been "meh" on it even after de-banning it somewhat with a 6 pos telescoping stock and a Vortex flash hider, because it's an A2 with the forged-in carry handle, and then there's the weird ban-era Colt pins and the block behind the FCG.
I'll have to make sure all my old A2 furniture is around, and get an A2 birdcage flash hider for it so I can make it as complete as possible just in case.