That's not my test, that's Ryan Deiss and Perry Belcher talking about their "43 Split Tests" product.
The spec of the "Magic button":
Size: 400px wide
Button color: FEB500 Orange
Text color: 000066 Navy Blue
Background (with [payment options logos): FFFFCD
Text: "Add to Cart"
Ryan observed 200-300% increase in sales compared to other colors and text.
Additionally, he noticed 18% bump in conversions for crossed out larger non-sale price.