Examine source code of Fireplace-theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Fireplace",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(36, 38, 38)",
      "toolbar_text": "rgb(223, 86, 57)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(203, 177, 170)",
      "toolbar_field": "rgb(221, 120, 75)",
      "toolbar_field_text": "rgb(6, 6, 7)",
      "tab_line": "rgb(238, 84, 14)",
      "popup": "rgb(6, 6, 7)",
      "popup_text": "rgb(6, 6, 7)",
      "ntp_background": "rgb(6, 6, 7)",
      "tab_loading": "rgb(238, 84, 14)"
    }
  }
}