If your customers compete against each other to get or use your product/service it should have more red.
If your customer/client feels themselves competing or negotiating with you on price you should have a blue background.
Red is a trigger for aggression/arousal.
Blue triggers calm.
Your job as a "marketer" is to think about what your client/customer is thinking/feeling when they ARRIVE at your page and if that is the state you desire them to be in. Notice that Facebook uses a blue background. "Come all day, stay, do nothing, don't worry, be happy, the universe will take care of everything." (See how that works?)