How to reuse variables (colors) defined on package.json

[jacargentina]

I'm using this package to customize the theme, with this:

"reactToolbox": {
    "customProperties": {
      "color-primary-dark": "#607D8B"
    },
    "output": "client/"
  },

I want to make use of that new color-primary-dark color in my own custom .css files. There is some way to do that?

Cheers!

[FDiskas]

Your example works for me - thanks