Examine source code of Material Sage Light

{
  "manifest_version": 2,
  "name": "Material Sage Rio",
  "version": "1.0",
  "description": "Custom Firefox theme",
  "applications": {
    "gecko": {
      "id": "material-sage-rio@local"
    }
  },
  "theme": {
    "colors": {
      "frame": "#CCCCC6",
      "tab_background_text": "#191C19",
      "toolbar": "#DDE4D7",
      "bookmark_text": "#191C19",
      "toolbar_field": "#EFF2EE",
      "toolbar_field_text": "#191C19",
      "toolbar_top_separator": "#707970",
      "tab_line": "#C7A4DE",
      "tab_text": "#191C19",
      "popup": "#EFF2EE",
      "popup_text": "#191C19"
    }
  }
}