Paint Explorer - how to add a second paint colour?

Hi, I’m new to this app and I’m having trouble adding a second paint colour to Paint Explorer. I’ve watched the tutorial twice now and can’t find a way to add a second colour. Looking to see how I can paint kitchen uppers and lowers a different colour.

Also, I’m having trouble accessing my photos from the app. I can save them no trouble but can’t access photo library from it.

After a lot of feedback we simplified the paint explorer to only one color at a time. Supporting two or more colors complicated the workflow a lot and it was confusing.

Instead, just paint one color, save the image, and then paint the other color. I will update the tutorial!