Where to buy replacement buttons? (L/LZ)

Any suggestions as to where I could buy replacement buttons?

I need a teal L-button for my New 2DS XL. It looks like the L, LZ buttons are one piece, no?

I haven't had much luck in my Google yet, between Amazon, Google, aliexpress,... Probably because it's still pretty new hardware.

Alternatively, does anyone know if other 3DS buttons could fit in that spot? Seems unlikely but I wondered if anyone who has both can tell.