How do I clean up a pond colorant spill?

Do not add water to the spill, you will just spread the dye!
If you have a liquid pond dye spill, soak up as much of the product with an oil absorbent.  Place the soiled absorbent in a trash bag to prevent colorant bleeding on anything else.
Use a 50/50 bleach and water mixture to clean up the rest.
To clean off of hands use bleach water, but be sure to keep out of eyes.