I "needed" some pink LEDs for a case mod I did on some Lian Li power/reset switches. They were hard to find, because mostly the ones called Pink were really Purple in output color.
Anyhow, I bought mine form a guy in the UK, but along the way I found two good places to look:
1) Model train suppliers. They use LEDs for all sorts of little lights.
2) Search for Pink as well as purple -- you might luck out that way.
- Ron || samwisekoi