I wanted to prolong my back glass life so bought some leds for the back box, not yet installed but got frosted warm white. As an experiment I thought I'd get a few others to test in coloured inserts. As the machine is a solid state I didn't want to stray too far from the original look so the frosted colour to suit the insert seemed best. They look pretty good I think, it's hard to show in the pictures, they probably look better in the flesh.
In the first picture the bottom two rounds have been replaced with purple frosted leds, the top is just a normal globe, so they seem brighter and more uniform. The 2X and 3X show it a bit better how the light is smoother and doesn't show the filament of a globe and the final picture sort of shows how they don't really dominate the play field. In the blue power target the right hand globe is a blue led. I think it'll work ok, particularly with the space theme of this pin.