Examine source code of Subtle Shifts Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Subtle Shifts Dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(63, 63, 63, 0.3)",
      "toolbar_text": "rgb(60, 60, 60)",
      "frame": "rgb(77, 77, 77)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(38, 38, 38, 0.16)",
      "toolbar_field_text": "rgba(40, 40, 40, 0.93)",
      "tab_line": "rgba(0, 253, 255, 0.41)",
      "popup": "rgb(0, 253, 255)",
      "popup_text": "rgb(15, 15, 15)",
      "button_background_active": "rgb(0, 213, 193)",
      "icons": "rgba(0, 0, 0, 0.41)",
      "popup_highlight": "rgb(148, 146, 146)",
      "tab_background_separator": "rgb(14, 14, 14)",
      "tab_text": "rgba(0, 255, 255, 0.48)",
      "tab_loading": "rgba(0, 253, 255, 0.41)"
    }
  }
}