Examine source code of AMC Gremlin Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "AMC Gremlin Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(94, 28, 30)",
      "toolbar_text": "rgb(221, 222, 229)",
      "frame": "rgb(17, 38, 72)",
      "tab_background_text": "rgb(245, 245, 245)",
      "toolbar_field": "rgb(24, 32, 53)",
      "toolbar_field_text": "rgb(162, 163, 164)",
      "tab_line": "rgb(240, 240, 240)",
      "popup": "rgb(5, 22, 48)",
      "popup_text": "rgb(200, 206, 214)",
      "button_background_active": "rgb(16, 16, 17)",
      "button_background_hover": "rgb(41, 67, 120)",
      "icons_attention": "rgb(177, 6, 6)",
      "ntp_background": "rgba(41, 69, 93, 0.99)",
      "popup_border": "rgb(130, 11, 15)",
      "popup_highlight_text": "rgb(38, 59, 97)",
      "popup_highlight": "rgb(198, 207, 222)",
      "sidebar_border": "rgb(100, 22, 22)",
      "sidebar_highlight_text": "rgb(70, 38, 34)",
      "sidebar_highlight": "rgb(94, 22, 12)",
      "sidebar_text": "rgb(189, 119, 131)",
      "sidebar": "rgb(16, 31, 44)",
      "tab_background_separator": "rgb(80, 108, 132)",
      "tab_loading": "rgb(251, 230, 4)",
      "tab_selected": "rgb(25, 22, 22)",
      "tab_text": "rgb(242, 237, 236)",
      "toolbar_field_border_focus": "rgb(40, 40, 39)",
      "toolbar_field_border": "rgb(22, 22, 22)",
      "toolbar_field_highlight_text": "rgb(9, 46, 89)",
      "toolbar_field_highlight": "rgb(185, 190, 196)",
      "toolbar_field_text_focus": "rgb(174, 166, 165)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8ee7bf29-2b60-4dd7-bef8-fa30803d9224}"
    }
  }
}