Vader MPP bubble mounting

[GCA]

I think the blue color is actually a green board but getting bluish with time.

Correct.

 

[GCA]

I think the blue color is actually a green board but getting bluish with time.

The motherboards were absolutely green. When copper corrodes/oxidizes, it turns blue. So—green is accurate for the on-set lightsabers. Blue is only 'accurate' for surviving sabers that are 40+ years old.