Examine source code of Zenitsu / Yellow

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Zenitsu",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 255, 255, 0.08)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(194, 200, 204)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(0, 0, 0, 0.22)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 200, 0)",
      "popup": "rgba(78, 78, 78, 0.9)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgba(251, 196, 1, 0.84)",
      "icons": "rgba(255, 255, 255, 0.9)",
      "ntp_background": "rgb(45, 45, 45)",
      "ntp_text": "rgba(255, 255, 255, 0.9)",
      "popup_border": "rgb(255, 200, 0)",
      "popup_highlight_text": "rgb(255, 200, 0)",
      "popup_highlight": "rgba(241, 241, 241, 0.11)",
      "tab_selected": "rgba(131, 111, 43, 0.32)",
      "toolbar_field_border_focus": "rgba(169, 141, 43, 0.86)",
      "toolbar_field_focus": "rgba(37, 37, 36, 0.7)",
      "toolbar_field_highlight": "rgba(255, 200, 0, 0.64)",
      "toolbar_top_separator": "rgba(21, 21, 21, 0)",
      "tab_loading": "rgb(255, 200, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{873e7650-0be7-4448-8bc6-7a9a7f9674b4}"
    }
  }
}