When using this event:

    SHEEP@LIGHT_BLUE:
    - trigger: RIGHT_CLICK
      tool: sponge
      effect: POTION_BREAK
      event: DYE@WHITE
      message: "&aBAAA! You scrubbed the dye off the sheeps wool!"

It duplicates the messages for every other event. So if i use SHEEP@LIGHTBLUE every event with a message then duplicates its message.

    SHEEP@BLUE:
    - trigger: RIGHT_CLICK
      tool: sponge
      effect: POTION_BREAK
      event: DYE@WHITE
      message: "&aBAAA! You scrubbed the dye off the sheeps wool!"

This event then puts:
BAAA! You scrubbed the dye off the sheeps wool!
BAAA! You scrubbed the dye off the sheeps wool!"

If i remove ONLY the light_blue everything works correctly. Every other color works with no problem. I am assuming it has something to do with being the ONLY color with an _ (underscore) in it.