In this tutorial, I share my process to make quick Colorkeys in BLENDER,  but no colour Theory.

This is mainly a tutorial to show my process but you can use the shaders if you don´t want to create them by yourself, you just need to copy paste to your objects  or adding to your material library in the Asset Browser

Around 32 min of video and 3D scene with shaders.

If you have any questions you can contact me at

https://www.instagram.com/maltese_studios/

https://www.facebook.com/Maltesestudios

https://www.artstation.com/maltese

https://www.maltesestudios.com/

Thanks for your support

Jorge