Today we had a famous one, #184, which is painted in an historical or "heritage" color scheme to commemorate Amtrak's 40th birthday in 2011. It's much nicer looking than the boring grey that the Gennies usually sport. #184 looks like it's new in the area because it has a very new looking "shoe" for the ATS system.
I like the look of the paint, and I bet it looks very smooth when it's pulling the superliner cars (which are painted similarly, with red stripes). The engine's paint is in great shape, and it looked positively sparkly in the late afternoon sunlight.