I must admit drawing my pistol would be my first thought upon seeing someone in a mask driving by pointing an apparent gun at me. The only thing that might help is if I had seen them shooting at someone else and saw it was paintballs. Maybe a better plan would have been to set up targets in their own yard to shoot at. Could have still done a drive by but not shoot at people.
My Dad wouldn't have let me shoot the paintball gun at other people. He didn't want us doing that with BB guns or toy guns either. BB's were cheap. I don't know what paintballs cost back then.