Well all be damned

This thing does have a backlit keyboard which for me, someone who spends most of his time in the dark, becomes a problem.

I have a HP Pavilion dv6-6135dx

How can I make this happen without turning lights on? I'm open to any random/serious suggestions as the silliest one may be useful.

I've thought about finding some glow in the dark substance and drawing over the keys....