No-Flash lighting

Hello! I have a question. I just finally shot my first show with my new f/1.8 lens. I was really excited about it. The photos still turned out a bit dark because the lighting was horrible and there was no photo pit or any place at all to stand so I had to squeeze onto the side between a million people (despite my photo pass and the threat that if I didn't have one I'd be kicked out... while there were like 50 people with cameras like mine and no photo pass). But that's beside the point. Here's my question. Most of my photos picked up lots and lots and lots of the gel color. Like it looked like some of them were shot with a red gel right over my lens. I had the shutter speed at 180. If I sped it up any more it would cut down the red but there wouldn't be enough light to see anything. The exposure would be all wrong. Is there anything I can do about this? I want SOME lighting color and atmosphere but I dont want a photo that's just red. I have a couple of really big (for me) shows coming up to shoot at some places with great lighting and I really want to get some good shots out of it. I got NOTHING from Wednesday's show, but I attribute some of that to he fact that I just could not get close enough to get good framing and their lighting was awful. Still, I want to correct this redness problem! Please help :)