Placed it out in the sun, and yes within 30 minutes there was an improvement.
Here are some photos of the seat totally finished.
The plastic is the stuff I got off ebay. I'd call it excellent. First of all, it's molded in color, not dyed, fit and grain are excellent. Color on the lower panels looks a tad light. Tremendous product for the price I think. Parts Place must have them made as the inside has their name molded into the plastic.
In the photos I am using my original trim .. could be me, but the stuff that came with the plastic was a little TOO chrome, too shiny to look right. The slightly yellowed originals sorta look better to me. The OEM trim is also a tad larger. Old trim fit on the new plastic perfectly. Keeping the new stuff in case I change my mind. Only thing missing is the bullet end caps, should be here tomorrow.
About $1000 invested in the whole project, so not bad.
Again, thanks Rambow and everyone for the information and advice.
