Does anyone know what the answer to this riddle is? (It's an element) I think it might be sulfur, but I'm not sure.

As you like it
Green, yellow, and bright
Born apart, I made'm die
I'm in it, who am I?

I bet it has something to do with Madame Curie who discovered radium and polladium wich are both radioactive and did kill them but I don't know what color they are