Examine source code of Purple Nurple

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Purple Nurple",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(152, 38, 120)",
      "toolbar_text": "rgb(255, 184, 234)",
      "frame": "rgb(175, 66, 144)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(168, 72, 141)",
      "toolbar_field_text": "rgb(223, 223, 223)",
      "tab_line": "rgb(227, 24, 169)",
      "popup": "rgb(168, 72, 141)",
      "popup_text": "rgb(223, 223, 223)",
      "button_background_active": "rgb(125, 19, 94)",
      "button_background_hover": "rgb(121, 32, 96)",
      "frame_inactive": "rgb(122, 15, 92)",
      "icons_attention": "rgb(0, 255, 20)",
      "ntp_background": "rgb(152, 38, 120)",
      "ntp_text": "rgb(0, 0, 0)",
      "sidebar": "rgb(152, 38, 120)",
      "tab_loading": "rgb(25, 66, 142)",
      "toolbar_field_border": "rgb(132, 32, 104)",
      "toolbar_field_separator": "rgb(197, 197, 197)"
    }
  }
}