said by yahtzee:
only thing colored water would do is to give better visibility on the water that I already know exists...
If the water droplets are still clear, you know some valve/fitting/hose that distribute incoming clear water to the detergent basket or top of washer drum is leaking.
If the water droplets are colored, some valve/fitting/hose on the water exit path near the bottom is leaking. It is also possible that some colored water is spraying out from top of drum during rapid spinning.