Examine source code of Orange Highlight

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Orange Highlight",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-030-0f935cfde055600d01a959c5c15353de.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(20, 20, 20)",
      "toolbar_text": "rgb(150, 150, 150)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(180, 180, 180)",
      "toolbar_field": "rgb(40, 40, 40)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(255, 87, 25, 0.84)",
      "popup": "rgb(50, 50, 50)",
      "popup_text": "rgb(255, 255, 255)",
      "popup_border": "rgba(248, 243, 243, 0.37)",
      "tab_text": "rgba(255, 255, 255, 0.86)",
      "toolbar_field_border_focus": "rgba(219, 71, 23, 0.46)",
      "toolbar_top_separator": "rgba(255, 250, 250, 0.13)",
      "tab_loading": "rgba(255, 87, 25, 0.84)"
    }
  }
}