speed should turn mandelin green, marquis orange....
MDxx should make marquis dark purple/black, mecke navy blue/black, mandelin should also go dark purple black. The solution itself is yellow, so you're results with your mandelin are basically showing a typical 'no reaction' result. Simon's should turn a cobalt blue. you're robadope is showing no reaction also.
Strange results, unfortunately I do not know of a chemical that would produce them. I think it could be MBDB