I've been looking into different hair colorings to mask my grey, but I'm worried about if they're dangerous. Help!
I dont think its dangerous, hair dyeing with enough practice is good if done on other people to change their hair color.rather than yours. 
Might be a little hard to get volunteers for me practicing hair coloring. Seen any teenage scene girls lately? They might be willing, lol.
Well you can always have it done by a professionally hairdresser or at home by someone else who has done it before. 
Professional hairdresser might be the best idea. Should I go with a conventional hair color, or something wild and fun?
Something fun sounds great, you want to look your best for the guys. just use one bottle and dont over do it or you will ruin the color! 
Use three bottles to make sure it sticks, got it. I could always bleach it, right? That could be exciting!
Well if your hair is blond, then you shouldnt bleach it, Just wash it really good and choose a darker color. You dont want to ruin your hair roots.