Do not shade towards black. That's the one thing I'd tell you. Yes these are free to use go put it in ur backpack and use this as a guide. Red -> Pink Orange -> Red Yellow -> Orange (but can also be shaded towards green) Green -> Cyan (but can also be shaded towards yellow) Cyan -> Sky Sky -> Blue Blue -> Purple Purple -> Pink Pink -> Purple Black -> Blue White -> Blue Be aware that colours like brown, gold, and maroon still use the same rules due to them being a darker variant of their respective colours (Orange, Yellow, and Red)