Well there are 2 sources that I know of.
1) People modding there springs/stems. So if I bought clear switches, and used brown/red/blue springs, I would have clear springs left over because I didn't want them
2) Buying them, Sherry is selling but I'm not sure when they're going to ship
BTW I do have ~70 clear springs if you want to buy them. And I'll have 110 later on