Examine source code of crayona

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "crayon",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(31, 29, 29, 0.32)",
      "toolbar_text": "rgb(42, 255, 16)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(253, 255, 0)",
      "toolbar_field": "rgba(251, 44, 44, 0)",
      "toolbar_field_text": "rgb(255, 26, 160)",
      "tab_line": "rgb(255, 99, 0)",
      "popup": "rgb(14, 14, 14)",
      "popup_text": "rgb(142, 139, 139)",
      "tab_loading": "rgb(255, 99, 0)"
    }
  }
}