That shelf does have a nice blue glow coming from it. Would be nicer if it were Orange but you can't have everything.

Nice paint job though. MDF is such a pain to paint as it's so absorbent.
The LED mod is more for the prettiness of the fan, rather than for shedding light into a system. With 3mm 20-30 degree FOV LEDs most of the light goes straight to the blades and the fan hub, although this does rather depend on the fan itself. A shiny, reflective fan will bounce light everywhere, whereas a matt fan will tend to absorb the light a lot better.