I got mine from there, they carry green, pink, and yellow ones. The buttons are hyper-sensitive too. They sent me 4 of the wrong color (ordered yellow, got pink...), and their checkout system didn't include shipping charges. They never told me this until I asked about my order a week after it had been placed, they said I owed shipping charges, I paid and they shipped fairly quickly. I recommend them if you can't find a better solution.
Trieu over at s-c.com is making the s-c store into a whole arcade gaming store, not just SNK and Capcom products. Perhaps he realizes the need for candy cab stuff and he'll stock it. Email him and see, it might save you some trouble.