Reply to Light for S4

I'm believeing of getting myself a little light/torch that i can clip on to the side or back of my S4, similar to the target light in size from a technics 1200.

Only reason being, when it' really dark at times i have a hard time seeing what position some of the knobs are in, mainly because the little white lines on the knobs that native instruments provided, are rubbish. Compare them to a pioneer djm 800 knob and the difference is massive.

Any ideas or suggestions would be good!

Thanks

Tom