Dyeing Eyebrows

I usually darken my eyebrows with my mascara. Last night, an aethetician at a salon in the mall suggested that I tint them instead. I paid 15 bucks to have my eyebrows darkened, and I absolutely love it.

I'm now wondering if I could do this at home, since I color my own hair. The technique looked simple: She brushed a semi-permanent color on my brow hairs with a Q-Tip and had me wear it overnight.

Has anyone ever tried this? I've lightened my brows (back when I was blonde) with facial cream bleach, but I've never dyed them.

Thanks,
Ally