Examine source code of Purple Noiz

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "PurpleNoiz",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(45, 16, 67, 0.57)",
      "toolbar_text": "rgb(225, 219, 234)",
      "frame": "rgb(37, 29, 41)",
      "tab_background_text": "rgb(221, 229, 236)",
      "toolbar_field": "rgba(72, 79, 109, 0.36)",
      "toolbar_field_text": "rgba(233, 229, 238, 0.88)",
      "tab_line": "rgb(129, 88, 177)",
      "popup": "rgb(43, 31, 61)",
      "popup_text": "rgb(204, 202, 222)",
      "button_background_active": "rgb(164, 38, 199)",
      "button_background_hover": "rgb(107, 47, 157)",
      "frame_inactive": "rgb(20, 19, 21)",
      "ntp_background": "rgba(28, 22, 38, 0.88)",
      "tab_selected": "rgba(77, 50, 121, 0.25)",
      "toolbar_field_border": "rgb(103, 47, 157)",
      "toolbar_field_focus": "rgba(45, 32, 62, 0.96)",
      "toolbar_top_separator": "rgb(118, 47, 157)",
      "tab_loading": "rgb(129, 88, 177)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8617b9fd-ac0e-4334-8e4e-8528db38fb19}"
    }
  }
}