My sperm and masturbation is normal 95% of the time but just a few days ago I masturbated and the cum was green? Not like very green but a very faint colour. Now it's fine, but I was really worrying at the time so could someone help?

Also sometimes I masturbate and it's just (what I think anyway) just the fluid from the glands, coz it's was a very thin consistency and I was just wondering?