Examine source code of Magma Madness

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Magma",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 0, 0, 0.57)",
      "toolbar_text": "rgb(255, 41, 0)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(255, 0, 0)",
      "toolbar_field": "rgb(255, 106, 4)",
      "toolbar_field_text": "rgb(255, 0, 0)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(255, 145, 41)",
      "popup_text": "rgb(15, 15, 15)",
      "button_background_active": "rgb(255, 0, 0)",
      "button_background_hover": "rgb(255, 132, 0)",
      "frame_inactive": "rgba(255, 255, 255, 0)",
      "icons": "rgb(255, 164, 103)",
      "popup_border": "rgba(255, 255, 255, 0)",
      "popup_highlight_text": "rgb(255, 0, 0)",
      "popup_highlight": "rgb(192, 48, 48)",
      "sidebar_highlight_text": "rgb(0, 0, 0)",
      "sidebar_highlight": "rgb(255, 0, 0)",
      "sidebar_text": "rgb(255, 116, 0)",
      "sidebar": "rgb(221, 44, 44)",
      "tab_text": "rgb(0, 0, 0)",
      "toolbar_field_border": "rgba(255, 255, 255, 0)",
      "tab_loading": "rgb(0, 0, 0)"
    }
  }
}