You did not specify exact colors; you just said "colored ball chain." And I meant "quick" as in I didn't spend a lot of time on it personally, not that anyone should be able to find it. I do a lot of searches for other people who can't find what they need, and I'm generally pretty successful. (That's how I found R&T in the first place, looking for a very specific kind of neck wire a few years back.) There was absolutely no disparagement of your ability there, and I'm sorry you took it that way.
I've seen similar colors at Pat Catan's (a local craft chain) in the past, but they don't do Internet sales. They are related to Darice, which is a manufacturer of craft supplies. They sell wholesale only, but you might be able to establish an account with them if you're moving enough quantity. These colors come in assortments only:
https://www.darice.com/ecom/ProductDetails.aspx?it=1981-76&oid=43688#Metalliferous also has ball chain (in the base metal -> aluminum section of their catalog), but the colors seem to be more intense than the picture you linked to, although a couple are close.