Like Senegal, Morocco was subjected to kit color temperature related bias choice. Why do I impute so! Physicist John Leslie of Edinburgh discovered that light color surface reflects light hence cooling effects. Whereas, dull colors absolves heat. In my observations, both Senegal and Morocco had been playing in their white uniforms in their previous group matches to prevent heat exhaustion in hot climate Qatar. But came knockout stage. I opine they were forced to don dull colors uniform not conflict with light colors of England and Spain respectively.