Not necessarily. In some scenarios green buttons performed much worse than red (http://blog.hubspot.com/blog/tabid/6307/bid/20566/The-Button-Color-A-B-Test-Red-

Not necessarily. In some scenarios green buttons performed much worse than red (http://blog.hubspot.com/blog/tabid/6307/bid/20566/The-Button-Color-A-B-Test-Red-Beats-Green.aspx http://blog.hubspot.com/blog/tabid/6307/bid/20566/The-Button...) and orange (http://visualwebsiteoptimizer.com/split-testing-blog/tag/red-button/ http://visualwebsiteoptimizer.com/split-testing-blog/tag/red...) buttons.