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.