I wish I could knit like that. Many moons ago I bought a pattern set, all the wool etc., to make a long cardigan with a dragon down the back. Fabulous it was, unfortunately I had no experience of running with half dozen different colours and although it was wearable (inside) it looked nothing like the original.
I think I just about managed to knit a three colour school scarf and that was in nice bands so relatively easy.
Lovely neat knitting.