Examine source code of Dark-Mint-transparency

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark-Green",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(64, 62, 62)",
      "toolbar_text": "rgb(200, 197, 195)",
      "frame": "rgb(37, 36, 35)",
      "tab_background_text": "rgb(140, 140, 140)",
      "toolbar_field": "rgba(43, 41, 40, 0.7)",
      "toolbar_field_text": "rgb(100, 252, 35)",
      "tab_line": "rgb(100, 252, 35)",
      "popup": "rgba(25, 23, 23, 0.7)",
      "popup_text": "rgb(100, 252, 35)",
      "ntp_background": "rgb(43, 41, 40)",
      "popup_border": "rgb(100, 252, 35)",
      "tab_loading": "rgb(100, 252, 35)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d123255c-c37c-418a-b94e-22ae3b3d1f3c}"
    }
  }
}