Swatches on dawn theme 15.0.0

[itbrun]

Currently, I am working on swatches for my products on the Dawn theme 15.0.0. The issue I am encountering is trying to put two colors in one swatch, as shown on the Shopify Help Center (picture added).

In the metafields option under color, there is a "Multicolour" option, but when I click on it, I can only choose one color. I was under the impression that this option would allow me to pick two colors. I have spoken to Shopify support, and they said I need someone to code it, which I find odd. I have also gone over the steps they provided, but I can't get it to work unless I have missed something very obvious.

Any knowledge or answers on this would be much appreciated.