Examine source code of Azul escuro ff

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "dark blue theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(225, 234, 239, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(142, 153, 201)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(57, 57, 57, 0.29)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(28, 83, 199)",
      "popup": "rgba(0, 0, 0, 0.85)",
      "popup_text": "rgb(255, 255, 255)",
      "icons": "rgb(251, 251, 251)",
      "ntp_background": "rgba(0, 0, 0, 0.85)",
      "popup_border": "rgba(28, 49, 199, 0.72)",
      "sidebar_border": "rgba(49, 66, 189, 0.72)",
      "sidebar_highlight": "rgba(57, 57, 57, 0.29)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(0, 0, 0)",
      "tab_selected": "rgba(243, 245, 246, 0.12)",
      "tab_loading": "rgb(28, 83, 199)"
    }
  }
}