Are their different injectors colors for this sled?

Looks like the dealer has to change the ECM map via Digital Wrench to match the new color coded injectors.

Per the Service manual:
"To obtain the correct fuel injector set for the vehicle, always reference the model-specific parts manual when ordering new fuel injector set. Note that fuel injector color code may not match the fuel injector set originally installed on the engine."

In addition:

"The MAG & PTO fuel injectors are noted w/labels. Install the fuel injectors in their correct locations.
RED, BLUE, or YELLOW color bands are located at the base of each fuel injector. When replacing fuel injectors, reference this color band to ensure the right fuel map is selected using Digital Wrench."

why do you need new injectors?

Aren't you running a Silber set-up? If so, check with Corey or Justin.

Yes, Rich is correct. PI states the flash in the ECU must match the corresponding color injectors for proper flow rate and injector timing.

It's kind of scary your dealer doesn't know this. The three different injectors each flow different. Polaris orders the injectors and then tests each one. Due to manufacturing tolerances they vary a little. They mark the highest flowing injectors one color, the lowest flowing injectors another color and then the average ones another color. They then have three different ECM maps, one for each color of injector