I have used the Cointaker 4+1 LEDs in my 90s DMD games with colored caps and they work very nicely.
I match the LED color to the cap color and the color they output matches the caps color nearly perfectly.
In older games, though, I'm not sure what you'd do.
If the LED saves the cap from burning, but it looks awful, what's the point? Do you want an ugly game that won't burn, or a game that's ugly, but won't burn?
