Examine source code of Neon&Green Dark Mode

{
  "manifest_version": 2,
  "version": "3.0",
  "name": "Neon&Green (BETA) (Dark Mode)",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-002-609370e89a219e0548ac5ef6b4a7dd2e.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(1, 17, 30)",
      "toolbar_text": "rgb(0, 255, 106)",
      "frame": "rgb(1, 17, 30)",
      "tab_background_text": "rgb(24, 185, 180)",
      "toolbar_field": "rgb(0, 23, 40)",
      "toolbar_field_text": "rgb(0, 255, 106)",
      "tab_line": "rgb(24, 185, 180)",
      "popup": "rgb(6, 55, 86)",
      "popup_text": "rgb(127, 205, 237)",
      "tab_loading": "rgb(24, 185, 180)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{19289993-e8b6-4401-84b7-93391b61ff0a}"
    }
  }
}