Super, I'm not a lighting expert or anything.
But I'll say this:
LED's do not produce enough light, now I mean than respectively:
Yes, a led will enable you to see something.
However, it does not produce NEARLY enough lumens to keep a plant going, plus what spectrum is it in?
From veg to fert some people change the bulbs to feed the plants the right spectrum.
So are they red or blue based?
Basically: I think its a bad idea, plus the plants will stretch to reach them.