There were no rules invented or broken in CO. Cruz simply worked hard and outworked Trump, who did very little. Trump thumbed his nose at CO too by not going to speak at the convention. He chose not to and it hurt him. Cruz went there and got a rousing reception.
Then explain the #nevertrump tweet. I hope you come up with something better than a vast Trumpwing conspiracy.
Yes he went to Colorado, but ignoring voters in the northeast. I think trump is better off with those 250 delegates rather the Colorado honestly.