Examine source code of Blue Highlight Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "giod",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(35, 35, 48)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(119, 162, 202)",
      "tab_background_text": "rgb(237, 237, 237)",
      "toolbar_field": "rgb(40, 40, 40)",
      "toolbar_field_text": "rgb(244, 244, 244)",
      "tab_line": "rgb(153, 172, 255)",
      "popup": "rgb(51, 52, 52)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_hover": "rgba(67, 67, 70, 0.44)",
      "tab_loading": "rgb(153, 172, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{eaf67040-da8e-47fa-8866-38a928fb9497}"
    }
  }
}