Examine source code of Apprentice-Inspired

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Apprentice-Inspired",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-030-0f935cfde055600d01a959c5c15353de.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(28, 32, 35)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(20, 25, 30)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgb(39, 45, 49)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(10, 107, 111)",
      "popup": "rgb(28, 32, 35)",
      "popup_text": "rgb(196, 196, 196)",
      "popup_border": "rgb(28, 32, 35)",
      "tab_loading": "rgb(10, 107, 111)"
    }
  }
}