Best at normal speed. Colours vary with the timer. This one is a bit slow, but I like the design.
Thanks to -Jie- who made the first heart in this studio using the formula from http://mathworld.wolfram.com/HeartCurve.html I made Quadrifolium https://scratch.mit.edu/projects/115747965/ & Hexafolium with Colour https://scratch.mit.edu/projects/115958789/ based on similar formulae. Colour idea from PinkyPepper. I decided to make several hearts with colour. leszpio has also made a Heart program using the same formula as -Jie- https://scratch.mit.edu/projects/116020561/