changing colors is very involved and labor intensive. this is not something i would recommend. you have to be concerned with painting all jamb areas...engine walls/compartment...etc. it's endless unless you completely disassemble the car down to the shell to do it correctly. this cost could be 7k. but to do it half as* (imo)...maybe 2 - 3k.

i would purchase another crossfire (black) before changing the paint color on a current crossfire. the change of color will also kill any value a crossfire in its factory color would have (which isn't much).