idea, small LED's inside the ends of a piece of white stryene tube. paint the ends black to prevent bleed out, get a piece of white styrene channel. paint the inside part matt black, then mat white over that,the black undercoat will prevent bleedout, the white outer will act like a reflector, glue the tube to the channel to get somehting like [0 ([ = channel 0=tube) send wires into the superstructure and connect to power source.

hey presto.