I saw a large fireball with really huge green, yellow and red flames.I saw a large fireball (larger than a plane would appear)the flames of which were sometimes green, sometimes yellow and the middle steady orange. It looks exactly like a a ball on big fire. It was initially low and big, then started moving up and away and getting significatly smaller, but still "burning". It wasn't moving too fast but it rised and disappeared above the clouds within 30 seconds.((NUFORC Note: Witness elects to remain totally anonymous; provides no contact information. PD))