Examine source code of prpll

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "prpll",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(50, 22, 75, 0.16)",
      "toolbar_text": "rgb(211, 157, 250)",
      "frame": "rgb(22, 54, 75)",
      "tab_background_text": "rgb(219, 175, 250)",
      "toolbar_field": "rgba(0, 0, 0, 0.03)",
      "toolbar_field_text": "rgb(183, 140, 151)",
      "tab_line": "rgb(117, 5, 249)",
      "popup": "rgba(38, 22, 75, 0.85)",
      "popup_text": "rgb(254, 196, 212)",
      "button_background_active": "rgba(7, 195, 162, 0.79)",
      "button_background_hover": "rgba(207, 8, 221, 0.79)",
      "icons": "rgba(145, 138, 248, 0.8)",
      "ntp_background": "rgba(2, 44, 51, 0.59)",
      "popup_border": "rgba(23, 5, 228, 0.37)",
      "popup_highlight_text": "rgba(24, 8, 211, 0.37)",
      "sidebar_border": "rgb(106, 4, 240)",
      "sidebar_highlight": "rgb(97, 49, 245)",
      "sidebar_text": "rgb(192, 148, 250)",
      "sidebar": "rgb(1, 38, 36)",
      "tab_background_separator": "rgb(13, 74, 237)",
      "tab_loading": "rgba(21, 5, 207, 0.37)",
      "tab_selected": "rgba(22, 7, 190, 0.37)",
      "toolbar_field_focus": "rgba(3, 20, 20, 0.88)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{edd44450-9108-4f95-a77e-a4a669af4794}"
    }
  }
}