It more so depends on your area. Obviously, an urban city like area would cause many problems. Though if you live in a wooded area, most counties do not care as long as you do not vandalize.
No there are a lot of paintball fields and stores in California in fact the big tournaments are held in CA every year
Spray paint is not illegal. How ever the only reason it could be illegal is vandalism.
NO
As long as your neighbours are ok with it
The law on oil based paint in California states that oil based paints cannot be sold in California. More Eco-friendly paint products are sold in California.
altho their was controversy it is not illegal
Paint the trees in your backyard
no.
Air soft is better in that it is much more realistic, cheaper, and can be played in a larger variety of environments (you can exactly play paint ball in your neighborhood, can you?). However, paint ball allows for fairer game play. This can be solved by buying paint ball BB's (paint balls in BB form) which are more expensive but less expensive then real paint balls. Basically, air soft is better if you are playing with honest friends or you don't have a paint ball arena in your backyard, but if you're playing with large teams or for competition and you have the money, paint ball is the way to go.
You can spray paint whatever u want on it, but it is considered illegal if you spray over the orange tip of the gun.
Why would it be considered illegal to paint and resell a headset? :-)
no