I think Seth's color is definitely blue. I've put him in several different colors and, of course he looks cute in all of them, but by far, he looks the best in blue. Here's a few pics of him with his face less scrunched up.
(The one below is Maya's photography work - not too shabby)
The one above is how I spend a lot of my day. I need to figure out how to work the "Wrap n Wear" my sister let me borrow so I can free up my hands now that my sister is flying home and I'll be on my own a lot. Wish me luck.