To add custom colours to your Space Engineers 2 world you only need to import a blueprint from Space Engineers 1.

• You can do this by downloading either this 256 colour palette:
  
  Download: Colour Palette 256.txt ~20KB[gist.github.com]
  
  
• And/or the 2200 colour palette:
  
  Download: Colour Palette 2200.txt ~172KB[gist.github.com]

And then extract the txt file from the zip and place in the following folder:


From here you can launch Space Engineers 2 and you will be able to find these blueprints in your G menu under the tab Blueprints.

Once you've placed one of these blueprints in your world you can use the colour picker function of the paint gun to select any of these colours and use them on your own creations.

Enjoy!