Start by lining a large baking sheet with wax or parchment paper - up to you which one.
Take and open up each Rice Krispie Treat and toss the wrappers in the trash.
Next, take and use the small paring knife to carefully cut two of the top corners of the Rice Krispie Treat. Once that is done, use your hands to mold the edges into a round shape to resemble the look of a popsicle. Repeat this with all of the treats.
Take and Insert one popsicle into the bottom of each treat and then put it on the prepared baking sheet.
Once this is done for all, take and place the baking sheet in the fridge for 20 minutes.
After the Rice Krispie Treats have firmed up, go ahead and open up the candy melts. Then, take and pour about 1/2 of each of the colors into separate microwave-safe dishes.
Put one color at a time into the microwave and heat in 30-second increments, stirring occasionally, until melted completely.
Then, you're going to take and dip four of the Rice Krispie Treat Popsicles into the melted coating. Allow the excess to drip back into the bowl to avoid a mess.
Once you've dipped, take and place the treats on the baking sheet and add on the sprinkles.
Repeat this same process with the other bowl of candy melts as well.