Found by a chance:
Gray - https://aliexpress.com/item/33056367437.html
Yellow - https://aliexpress.com/item/33055338365.html
Black - https://aliexpress.com/item/33047693860.html
Edit:
Updated text to reflect reality.
Alps SKBM Grays, SKBM black, SKCL yellow most likely new old stock from china
- ZedTheMan
- Location: Central US
- Main keyboard: IModel F77/IBM 3101/Omnikey 102/96Kee
- Main mouse: Logitech G430/Logitech M570/Kensington Expert
- Favorite switch: Beamsprings. Alps SKCM Blue, Capacitive Buckling S
- DT Pro Member: 0219
I think the first link may be the SKBM Grays that went around earlier. Lighting just makes them look blue. The yellows, however, are SKCL.