I just received a bass from a friend of mine, but she didn't know very much about it other than that it was a half size. Up until now I've been a cello player so I couldn't say. Long story short, I need help identifying the strings on it now. They look fairly unused, not even the wrappings are frayed. The bottoms are purple with gold on either end of the purple, with a strand of gold spiraling around it. The balls look solid brass. On the top are, low to high; green, black, gold, and red. The reason I'm asking is because I'm tuning my bass in fifths (CGDA), and I'm assuming it has a normal set of EADG's on it. The D and G strings aren't a problem, and to an extent, the A. But the E needs to come down a Major 3rd in order to hit C. Should I go for a B string? If so, would the E make a better G (up a minor 3rd)? I'd say I play mostly arco, but wouldn't mind a nice pizzicato. I'm looking for a string that would match the tone/tension of the ones I have now.