Examine source code of DDLC theme option

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "DDLC theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 224, 242)",
      "toolbar_text": "rgb(195, 108, 153)",
      "frame": "rgb(240, 146, 202)",
      "tab_background_text": "rgb(169, 169, 169)",
      "toolbar_field": "rgb(240, 146, 202)",
      "toolbar_field_text": "rgb(244, 244, 244)",
      "tab_line": "rgb(225, 93, 193)",
      "popup": "rgb(234, 139, 193)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_hover": "rgb(83, 255, 109)",
      "icons_attention": "rgb(255, 83, 250)",
      "ntp_text": "rgb(234, 139, 193)",
      "popup_highlight": "rgb(68, 255, 97)",
      "tab_background_separator": "rgb(246, 83, 255)",
      "tab_loading": "rgb(225, 93, 193)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8ab2181d-a8eb-4488-8416-23ec55473b0a}"
    }
  }
}