Hello, Orange in the burner flames is a red flag, it indicates too much fuel and not enough air going to the burner heads. That aspect need to be looked over on site by a qualified HVAC technician who owns combustion analysis equipment.
The other issue, early termination, and three tries at starting up etc. Point to a dirty flame sensor, probably caused by soot from the yellow in the burner flame..
The fact that you have to wait until the furnace turns off sometimes before it will restart points to air distribution duct work too small, or a dirty air filter or something else blocking the air flow... that causes the high temperature safety limit switch to trip.
Look all that over, take your time, clean the flame sensor rod with steel wool...you can find it on the wiring diagram, then follow the wire to it from the printed circuit card...all you will see is two screws holding a white ceramic insulator in place.
Let me know what you can discover, we can go from there without a time limit.