How experienced are you with working with toxic chemicals? Of course, what you suggest can be done safely, but you need to know what you do.
If you make chlorine gas in small quantities, then you can do that outside ssafely. You do not need to worry about killing yourself or some of the people and animals around you, but you can have quite an uncomfortable time if you take a big whiff of the gas accidentally.
Vinegar and bleach indeed produce chlorine, but you certainly will not see the green color of the gas, when you mix these two. For that purpose, vinegar is a too weak acid. If you really want bubbles of chlorine gas, then you need to add concentrated hydrochloric acid to household bleach.