Examine source code of Dark Green & Black

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark green & Black",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(32, 95, 39, 0.84)",
      "toolbar_text": "rgb(246, 241, 237)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(219, 214, 209)",
      "toolbar_field": "rgb(254, 249, 252)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(119, 25, 25)",
      "popup_text": "rgb(251, 138, 92)",
      "tab_loading": "rgb(0, 0, 0)"
    }
  }
}