Great selection indeed, I'm inspired as well :-)
Tanya, one tip regarding the mustard patent one from J Crew: It looks super on the photo. However, when I recently went to check out a wide belt at J Crew the color of which was exactly like this one, it wasn't what I'd call "mustard" at all. The color they use on the website is "buttercup" (for both this skinny belt and the wide one I looked at), though I wouldn't really use that term to describe the actual color of the belt, either. It was a pretty "out there" kind of yellow, hard to describe; I personally didn't like it very much, and it didn't match my expectation after having seen it online. Just something to be aware of in case you were considering ordering online.
If you do find a great mustard colored belt, pleeze let me know; I'm on the lookout for one myself (wide, skinny or double/wraparound). I like mustard as a color but it looks awful on me in a top, so I'm looking to incorporate it into my outfit through a belt in some other smaller way.