Hi Im getting old light balists from light fixtures in mobile offices trailers 4ft lights I think. The balist is little over 3lbs as is I have a total of a little over 75lbs in them I'm going to get plenty more should I take out the copper ? They are the black steel and tar kind only 3 or so are newer plastic ones. I saw something cool two of them were green outside what other colors do they come in?