If you mean the front bezel, for the A3000T, I have these two. You can take your pick. (The 3000T/040 has a darkend line on the bottom where it is melted & indented a tiny bit from bumping up against a radiator overnight a long time ago) the other one looks just like it is...
They are not yellowed, they're original 3000T tan. The photo doesn't show them as well as it could (my lighting sucks).

You can click to enlarge this photo.

I should note that each bezel has the same top right clip broken (common on 3000T's it seems) - click to enlarge.
One has a 3000 3.5 coverplate (it's the same color, don't let the photo fool you) the other has a 5.25 bezel cover. If somebody really wants some combination (both 3.5 drive bays with one 5.25 bezel in the non 040 case bezel) that's fine too as long as you don't expect it for free. I'm not a retailer, I'm not a computer seller, I'm a developer/consultant who thinks his time is worth something. :-)
/edit
I also have two backplates in perfect condition. (they could use a wiping to get the dust off)

(click to enlarge)