Examine source code of MyTheme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "MyTheme",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(31, 29, 40)",
      "toolbar_text": "rgb(78, 236, 133)",
      "frame": "rgb(31, 29, 40)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(31, 29, 40)",
      "toolbar_field_text": "rgb(193, 193, 250)",
      "tab_line": "rgb(129, 255, 179)",
      "popup": "rgb(31, 29, 42)",
      "popup_text": "rgb(213, 212, 254)",
      "icons": "rgb(78, 236, 133)",
      "ntp_background": "rgb(31, 29, 40)",
      "sidebar": "rgb(31, 29, 40)",
      "tab_text": "rgb(140, 185, 253)",
      "toolbar_field_highlight_text": "rgb(140, 185, 253)",
      "tab_loading": "rgb(129, 255, 179)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9bf43553-eddd-4cbe-9f9c-c5b6511cadf9}"
    }
  }
}