I know it's a common problem for the original SNES systems to have yellow discoloration. Personally, the SNES that I just picked up doesn't have this problem. It's a later version of the original SNES design (with the only noticeable difference being that the word 'eject' is molded on the eject button instead of being printed in white) and I'm wondering: do these later versions ever yellow?

The bottom half of the outside of my SNES is a slightly darker shade of gray compared to the top half, and I'm not sure if this is the beginning of a gradual yellowing process or what. If you're an owner of one of these later SNES models, what does your console look like?