I am picking up a 318is next week,

,happy about everything except it is red! I know some people like them but it was not my prefered colour (in fact I was doing everything to avoid a red one!) but I have not let it get in the way of getting a minter what I want to know is:
How much should I look to be spending if I wanted it resprayed?
AND
Will it devalue the car at all if it is not in the original colour?