Examine source code of Chromium Green

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Chromium Green",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(0, 66, 21)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(6, 39, 15)",
      "tab_background_text": "rgb(133, 168, 133)",
      "toolbar_field": "rgb(3, 47, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(5, 66, 17)",
      "popup": "rgb(33, 89, 35)",
      "popup_text": "rgb(255, 255, 255)",
      "toolbar_field_border": "rgb(0, 46, 3)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgb(0, 118, 64)",
      "tab_loading": "rgb(5, 66, 17)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9513b659-192f-491b-b330-37257eea9dcb}"
    }
  }
}