It kind of gets mentioned in footnote 2, but if you both pick at the same time Olive is the strongest die with 40/72 (56%) chance of winning against a different

It kind of gets mentioned in footnote 2, but if you both pick at the same time Olive is the strongest die with 40/72 (56%) chance of winning against a different color, and Red is the weakest with 32/72 (44%).