Examine source code of colette

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "colette",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "repeat-y"
      ]
    },
    "colors": {
      "toolbar": "rgba(11, 239, 205, 0.38)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(128, 4, 253)",
      "tab_background_text": "rgb(250, 245, 245)",
      "toolbar_field": "rgba(0, 0, 0, 0.57)",
      "toolbar_field_text": "rgb(250, 245, 245)",
      "tab_line": "rgb(5, 8, 254)",
      "popup": "rgb(250, 3, 187)",
      "popup_text": "rgb(251, 245, 250)",
      "ntp_background": "rgb(29, 219, 155)",
      "tab_loading": "rgb(5, 8, 254)"
    }
  }
}