I don't love the conformation on the Colorado stallion, from the front it looks like he has a really crooked leg and the hindend is too straight.   Also, there isn't much that can be learned from the testing about his temperment.  The test was never designed for middle aged stallions, he's 11 when the other stallions are 3-5years. That wouldn't have been allowed in Germany.   I'm not much for spots but there is a stallion in Germany, forgot the name, that is so much better quality.  Colorado would make a nice gelding.