Examine source code of cinnamoroll

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "cinnamoroll",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(11, 12, 13)",
      "toolbar_text": "rgb(131, 197, 236)",
      "frame": "rgb(11, 12, 13)",
      "tab_background_text": "rgb(131, 197, 236)",
      "toolbar_field": "rgb(11, 12, 13)",
      "toolbar_field_text": "rgb(131, 197, 236)",
      "tab_line": "rgb(131, 197, 236)",
      "popup": "rgb(11, 12, 13)",
      "popup_text": "rgb(131, 197, 236)",
      "button_background_active": "rgba(11, 12, 13, 0)",
      "button_background_hover": "rgba(131, 197, 236, 0.25)",
      "frame_inactive": "rgb(11, 12, 13)",
      "icons_attention": "rgb(131, 197, 236)",
      "icons": "rgb(131, 197, 236)",
      "ntp_background": "rgb(11, 12, 13)",
      "ntp_text": "rgb(131, 197, 236)",
      "popup_border": "rgb(131, 197, 236)",
      "popup_highlight_text": "rgb(131, 197, 236)",
      "popup_highlight": "rgba(131, 197, 236, 0.25)",
      "sidebar_border": "rgba(187, 217, 240, 0)",
      "sidebar_highlight_text": "rgb(131, 197, 236)",
      "sidebar_highlight": "rgba(131, 197, 236, 0.25)",
      "sidebar_text": "rgb(131, 197, 236)",
      "sidebar": "rgb(11, 12, 13)",
      "tab_background_separator": "rgba(95, 172, 23, 0)",
      "tab_selected": "rgba(45, 54, 62, 0)",
      "tab_text": "rgb(131, 197, 236)",
      "toolbar_bottom_separator": "rgba(11, 12, 13, 0)",
      "toolbar_field_border_focus": "rgb(131, 197, 236)",
      "toolbar_field_border": "rgba(187, 217, 240, 0)",
      "toolbar_field_focus": "rgb(11, 12, 13)",
      "toolbar_field_highlight_text": "rgb(131, 197, 236)",
      "toolbar_field_highlight": "rgba(131, 197, 236, 0.25)",
      "toolbar_field_separator": "rgba(11, 12, 13, 0)",
      "toolbar_field_text_focus": "rgb(131, 197, 236)",
      "toolbar_top_separator": "rgba(11, 12, 13, 0)",
      "toolbar_vertical_separator": "rgba(11, 12, 13, 0)",
      "tab_loading": "rgb(131, 197, 236)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f0e70435-7cb2-4409-9b0b-1af7ea827a7a}"
    }
  }
}