Examine source code of HeadstoneGlow

{
  "theme": {
    "images": {
      "theme_frame": "HeadstoneGlow.jpg"
    },
    "colors": {
      "frame": "#cc6306",
      "tab_background_text": "#ed751f"
    }
  },
  "version": "2.0",
  "name": "HeadstoneGlow",
  "manifest_version": 2,
  "description": "Pumpkin Carving of Headstone, Skull with Wings"
}