Cookiecad (TM) Sunrise PLA, 50g

From the manufacturer --

It has three colors on one spool! The color will change slowly over time, so small objects will only contain one color. You can print multiple items at a time, large items, or increase infill to get more of the color change into a single print. The colors will fade from pink, to orange, to yellow and back to pink. Every color in the transition is beautiful.