LED PBT Keycaps.
Are you able to get a set of 87 PBT LED "white key" keycaps ("Black or Red" key print colour for secondary symbols)
(Deck Legend actually make a keyboard with PBT LED keycaps, so they should be possible to make them)
Keycap set - 87
Cherry Key Caps - to fit Ducky
Key Cap Plastic - PBT LED Keys
Key Cap Colour - WHITE
Key print Method - Double Shot ??
Key print colour - (secondary symbols) - Black or Red (prefer black)