If you are interested in color pooling crochet, you may have read Deborah Bagley's blogs. She pushes the technique beyond what I’ve seen elsewhere.
Crochet Coloring Pooling Tricks and Tips – Kit Dunsmore's Blog
Color Pooling Crochet: You Made Your Yarn Do WHAT? (Interweave)
How to Color Pool//Mainstays Blue Multi//tutorial
How To Do Planned Pooling Using Any Stitch
A Walker in the City Scarf: planned color pooling
Patons Pooling Crochet Scarf - Repeat Crafter Me
Crochet Color Pooling with Caron Simply Soft Stripes - Repeat
Planned Pooling with Crochet
Colour Pool Cowl Make My Day Creative
Planned Pooling in Knitting Projects – Knitting
Crochet color pooling with variegated yarn
Multiple Sequence Planned Pooling Crochet