Examine source code of Sweet Jam theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Sweet Jam",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top",
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 192, 192)",
      "toolbar_text": "rgb(248, 112, 140)",
      "frame": "rgb(255, 240, 189)",
      "tab_background_text": "rgb(106, 10, 31)",
      "toolbar_field": "rgb(255, 240, 189)",
      "toolbar_field_text": "rgb(193, 27, 63)",
      "tab_line": "rgb(248, 112, 140)",
      "popup": "rgb(255, 240, 189)",
      "popup_text": "rgb(248, 112, 140)",
      "button_background_active": "rgb(255, 240, 189)",
      "tab_loading": "rgb(248, 112, 140)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c6075a10-d58f-4d76-ae86-03521b5a12b1}"
    }
  }
}