This effect was EVERYWHERE when I first joined Colourtok earlier this year - it's the main reason I bought this book! - but at the time I was too scared to try it and thought I'd wait until Halloween. So here we are! The rainbow cauldron explosion effect in @cocowyocoloring's Little Corner. I'm so pleased I've finally done it 😂🌈✨❤️ #colortok #coloringcommunity #halloweencoloring Little Corner coloring ideas