I usually manage to keep it under 1000.

That sounds amazing.

Green sauces are made with tomatillos/green peppers/etc. and has a more vegetal flavor, while red sauces are made with tomatoes/red peppers/etc. andtastes like tomatoes, roasted red peppers, and the like. Spice level is irrelevant. Put more simply, the green sauces taste “green” and the red sauces taste “red”; and are better on different things. The good ones are hot as hell regardless of color.