Coloring your information product blue or red?

I can't decide at all. Both colors look really nice. The question is just, which color will bring in the most dough?

Blue has a calming psychological effect, it lowers the heart rate of the viewer.
Red makes the viewer more aggressive, and it raises their heart rate.

I can't figure out WHICH psychological effect is best.
I mean, you want the customer to take action, but at the same time...you want them to trust in what they're buying.

It seems that blue gives them the trust they need...while red makes them inclined to take action.

What are your experiences? Have you tested and found out?

Here's an interesting article about the subject:

http://www.cracked.com/article_20039...your-life.html

Especially read the last bullet point, which is about buying.

A quote:

"For example, people bidding online will pay substantially more when there's a red background on the selling page, but only when they perceive that they are competing against others. If, on the other hand, you don't think anyone else is bidding against you, red will tempt you to lowball the seller -- it's all about winning. Either way, you're on your guard and out to get someone. So what happens when the background is blue? You're more generous and willing to pay more."

After reading that...it seems that blue is the way to go...but then we read this:

"Not that blue works 100 percent of the time -- it depends on the product. If red makes people more watchful and defensive, companies that are promoting a product based on how it deals with negative issues can use red to encourage sales. If you're "fighting" something, your best bet is red."

In my case...my product is somewhat fighting something. But it's also a high-priced product.