Here are two quick pictures of my little swatch and the colander that made the marks:
This picture shows the piece, which started out a coral color, in the colander, plus another piece that started white drying next to it. Both are dyed with turquoise.
The second picture shows the sample after heat pressing with the colander in the background. I really am not fond of turquoise & coral together, but the hole pattern is really neat.
The large piece in the upper picture is an experiment that is still in process. I will post pictures when it’s done. Thanks for looking!