I would do the glows in comp. If you render the floor tiles on their own as a separate pass you can control all of you glows in 2d. That way you can re-tweak without using maya's awful glows etc.

The reason the go so bright is because maya's lights are additive so 1+1+1= 3 and 3 = super bright glows. Just maya being crap, You could maybe do something with the falloff values to make that stop happening.



Alan