Yes. Green really isn't suited to this current temperature. You could use red to try and "normalise" performance or use it as an excuse to buy a new toy that is CO2 powered.
@DrAlexanderTobacco Afraid not. My Hi Capa (GM) only gets off about 15-20 shots on a full mag until you hear the difference and then as you reach 25 shots there is a horrific drop off.