Examine source code of GreenOnGrey-Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "GreenOnGrey-Calm",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(30, 30, 30)",
      "toolbar_text": "rgb(170, 170, 170)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(106, 106, 106)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(43, 198, 55)",
      "popup": "rgb(49, 49, 49)",
      "popup_text": "rgb(192, 192, 192)",
      "popup_highlight_text": "rgb(0, 0, 0)",
      "popup_highlight": "rgb(39, 142, 39)",
      "toolbar_field_border_focus": "rgb(33, 130, 45)",
      "toolbar_field_focus": "rgb(36, 36, 36)",
      "tab_loading": "rgb(43, 198, 55)"
    }
  }
}