Examine source code of Minimal Yellow

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Minimal Yellow",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(55, 55, 57)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(55, 55, 57)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(55, 55, 57)",
      "toolbar_field_text": "rgb(235, 203, 139)",
      "tab_line": "rgba(248, 112, 140, 0)",
      "popup": "rgb(55, 55, 57)",
      "popup_text": "rgb(235, 203, 139)",
      "button_background_hover": "rgb(174, 135, 60)",
      "icons_attention": "rgb(235, 203, 139)",
      "icons": "rgb(235, 203, 139)",
      "ntp_background": "rgb(62, 64, 68)",
      "popup_highlight_text": "rgb(235, 203, 139)",
      "popup_highlight": "rgba(235, 203, 139, 0.31)",
      "tab_loading": "rgb(235, 203, 139)",
      "tab_selected": "rgb(174, 135, 60)",
      "toolbar_bottom_separator": "rgb(55, 55, 57)",
      "toolbar_field_border_focus": "rgb(235, 203, 139)",
      "toolbar_field_highlight_text": "rgb(235, 203, 139)",
      "toolbar_field_highlight": "rgba(177, 170, 155, 0.49)",
      "toolbar_field_text_focus": "rgb(235, 203, 139)",
      "toolbar_top_separator": "rgb(55, 55, 57)"
    }
  }
}