Examine source code of CaS Theme

{
  "manifest_version": 2,
  "name": "CaS Theme",
  "version": "3.0",
  "description": "Clean and Simple",
  "author": "Jovan Lanik",
  "homepage_url": "https://github.com/jovanlanik",
  "icons": {
    "48": "icon.png"
  },
  "theme": {
    "colors": {
      "frame": "#0c0c0c",
      "button_background_active": "#c5c5c5",
      "button_background_hover": "#d5d5d5",
      "icons": "#0c0c0c",
      "icons_attention": "#c92c66",
      "tab_line": "#f5f5f5",
      "tab_loading": "#163264",
      "tab_text": "#0c0c0c",
      "tab_background_text": "#f5f5f5",
      "toolbar": "#f5f5f5",
      "toolbar_bottom_separator": "#f5f5f5",
      "toolbar_field": "#d5d5d5",
      "toolbar_field_border": "#d5d5d5",
      "toolbar_field_border_focus": "#c5c5c5",
      "toolbar_field_focus": "#c5c5c5",
      "toolbar_field_text": "#0c0c0c",
      "toolbar_field_text_focus": "#0c0c0c",
      "toolbar_field_separator": "#3a548a",
      "toolbar_text": "#0c0c0c",
      "toolbar_top_separator": "#0c0c0c",
      "toolbar_vertical_separator": "f5f5f5"
    }
  },
  "applications": {
    "gecko": {
      "id": "clean@simple.theme",
      "strict_min_version": "61.0"
    }
  }
}