Examine source code of Colorful Code

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Colorful Code",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(62, 109, 134)",
      "toolbar_text": "rgb(204, 134, 209)",
      "frame": "rgb(41, 37, 39)",
      "tab_background_text": "rgb(98, 226, 77)",
      "toolbar_field": "rgb(116, 199, 184)",
      "toolbar_field_text": "rgb(78, 83, 172)",
      "tab_line": "rgb(142, 0, 255)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_loading": "rgb(142, 0, 255)"
    }
  }
}