Examine source code of Dark blue leaves

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark blue leaves",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(35, 35, 62, 0.29)",
      "toolbar_text": "rgb(222, 252, 252)",
      "frame": "rgb(40, 40, 77)",
      "tab_background_text": "rgb(153, 153, 175)",
      "toolbar_field": "rgba(222, 252, 252, 0.29)",
      "toolbar_field_text": "rgb(175, 206, 206)",
      "tab_line": "rgb(222, 252, 252)",
      "popup": "rgb(46, 46, 77)",
      "popup_text": "rgb(200, 228, 228)",
      "tab_loading": "rgb(222, 252, 252)"
    }
  }
}