Super Frig Bros. 3: Revenge of the Frigs, or simply Super Frig Bros. 3, is a Super Mario Bros. 3 ROM hack created by Mitch "mitchflowerpower" Fowler, built for his second ROM hack competition. It features 12 levels, along with a special mechanism that allows for Mario's hat and overalls to change colors between appearances (such as entering from a warp, growing/shrinking, etc.).
My TAS, made in May 2018, speeds through the hack in record time, beating Extronic's existing run by 4.6 seconds.
Your chance to join in on the fun in Mitch's competition may be over, but your chance to download the hack's IPS patch certainly won't be! ;)