Examine source code of greenish greens

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "greenish",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-023-f741aad3989b46322a7840a425068429.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(36, 38, 36)",
      "toolbar_text": "rgb(99, 192, 109)",
      "frame": "rgb(18, 1, 26)",
      "tab_background_text": "rgb(55, 123, 56)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(99, 192, 109)",
      "popup": "rgb(36, 38, 36)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(99, 192, 109)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9fe58a3a-af13-4939-a080-7e7faa78d97c}"
    }
  }
}