Examine source code of Neat Dark Theme - Yellow

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Neat Dark Theme - Yellow",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-018-0ca3dfc7bb661ec53999d358812ce0ab.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(31, 34, 61)",
      "toolbar_text": "rgb(215, 226, 239)",
      "frame": "rgb(8, 11, 33)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgb(54, 58, 89)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(233, 196, 106)",
      "popup": "rgb(54, 58, 89)",
      "popup_text": "rgb(215, 226, 239)",
      "icons": "rgb(233, 196, 106)",
      "ntp_background": "rgb(233, 196, 106)",
      "ntp_text": "rgb(54, 58, 89)",
      "popup_border": "rgb(233, 196, 106)",
      "toolbar_vertical_separator": "rgb(233, 196, 106)",
      "tab_loading": "rgb(233, 196, 106)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4c892c65-127c-4a70-99ff-666280e8fe14}"
    }
  }
}