Remove all of the bearings from the fidget spinner.

Fill a bucket with warm water.

Shake spray paint can and spray (one at a time) into the water.

Wearing gloves (if desired), dip the fidget spinner in the water/paint mix and swirl around to get the paint on the spinner.

Repeat for different colors.

Lay on cardboard to dry.

Once completely dry, put bearings back in spinner.