Five minutes was not enough time to have a thorough debate about who should go in what door. Some of the other ponies looked confused so Day decided to lay it out for them. "Alright guys so here are our options with the three doors:
First, all colors of one color goes into the color opposite on the color wheel. So, Green team goes into the Magenta door, Blue team goes into the yellow door, and Red team goes into the Cyan door.
The second and third options involve mixing up colors to create the door color. One choice is the solo red goes with blue pair through the Magenta door, solo green and red pair go through the Yellow door, and solo blue goes with green pair through the Cyan door.
The last choice is blue solo and red pair go through the Magenta door, green pair and red solo go through Yellow door, and that leaves blue pair and green solo go through the Cyan door. Anypony care to do a quick vote for a particular set up?"
(tl:dr here are the scenarios
1
Day Late, Stephan, and Midnght Blade - Cyan door
Cleo, Nova Flyer, Grand Finale - Yellow door
Blazing Hoof, Darkshift, Fire Horn - Magenta door
2
Day Late, Cleo, and Nova Flyer - Magenta door
Blazing Hoof, Midnight Blade, and Stephan - Yellow door
Grand Finale, Dark Shift, Fire Horn - Cyan door
3
Grand Finale, Midnight Blade, Stephan - Magenta door
Darkshift, Fire Horn, Day Late - Yellow door
Cleo, Nova Flyer, Blazing Hoof - Cyan door)