Examine source code of Decaf Espresso

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Espresso",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-006-51ab495c5f5dde6a3cddb22484acd00d.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(170, 161, 111, 0.69)",
      "toolbar_text": "rgba(255, 246, 185, 0.77)",
      "frame": "rgb(49, 47, 47)",
      "tab_background_text": "rgb(148, 144, 120)",
      "toolbar_field": "rgba(62, 61, 53, 0.31)",
      "toolbar_field_text": "rgba(255, 246, 185, 0.77)",
      "tab_line": "rgba(39, 38, 32, 0.77)",
      "popup": "rgba(153, 148, 105, 0.5)",
      "popup_text": "rgb(255, 252, 199)",
      "button_background_active": "rgba(57, 55, 36, 0.39)",
      "button_background_hover": "rgba(39, 38, 32, 0.5)",
      "icons": "rgba(219, 214, 153, 0.5)",
      "ntp_background": "rgba(113, 108, 81, 0.88)",
      "ntp_text": "rgba(217, 204, 139, 0.94)",
      "popup_border": "rgba(153, 148, 105, 0.86)",
      "popup_highlight_text": "rgba(57, 50, 9, 0.82)",
      "popup_highlight": "rgba(57, 50, 9, 0.82)",
      "sidebar_border": "rgba(113, 108, 81, 0.88)",
      "sidebar_highlight_text": "rgba(255, 246, 185, 0.77)",
      "sidebar_highlight": "rgba(113, 108, 81, 0.88)",
      "sidebar_text": "rgba(113, 108, 81, 0.88)",
      "sidebar": "rgb(211, 208, 170)",
      "tab_background_separator": "rgb(255, 252, 199)",
      "tab_loading": "rgb(255, 252, 199)",
      "tab_text": "rgba(255, 246, 185, 0.77)"
    }
  }
}