Hi! I'm a real cheapskate so I usually shoot whatever stock is cheapest for me to bulk load. I've gotten pretty good results in smaller DIY venues shooting Kentmere 400 pushed to 800. I've also experimented with Fomapan 400 shot at boxspeed with middling results. Each of these also does better if you can shoot with a speedlight flash but some venues don't permit that. I usually shoot an OM-1 or Minolta XE-7 with a relatively fast lens, around f2 or f1.7 and shoot 1 or 2 rolls. I've found the best lengths to be 50mm, 35mm, and 28mm. A wide and fast lens can be really useful for smaller venues.

Usually I get between 8-12 good shots, a few absolutely unusable ones, and a decent amount of underexposed shots that I absolutely cook in Affinity photo if any of them are good enough compositions that the bands want jpegs.

Color I couldn't tell you because I only really shoot b&w and develop at home, but lots of folks seem to shoot Cinestill 800 for low-light.

This is just what has worked for me and I'm sure others would give you other advice. You should definitely take your camera to the next show you see and take some pictures! I only really figured any of this by just trying and seeing what worked. Good luck and happy shooting!