I was told by someone that crawfish molt two times a summer! And I was told that red is a hot color to use when they molt ?

Yes, I've heard that crawfish molt every 1-2 months.

yes they do molt but that all depends on their available food and how fast they grow I'm pretty sure its no like i cycle thing like breeding season

Most likely will depend on your local species as to when they do it, as well as what color.  Try to find out whats most prevelant in your area and go from there.

When do crayfish molt?

Muddy would've replied, "Within 24-hrs of losing their shell"