Boeing 737 MCP Push Buttons Cover

Hello guys.

I'm building my own MCP for B737, but i'm having difficulties to find the push button caps (cover) for it. I'm using B3F-4055 Tactile Switches. What i want is black covers with translucent text + translucent rectangle for indicators, exactly what it is on real 737 (Collins model, not the old and ugly Honeywell).

Do you guys have any idea where i could find those buttons, or how to make it by myself!?

PS: Not sure if someone already requested it, but i searched on the forum and find anything about it.

Thanks!