Examine source code of Blood Spatter

{
  "theme": {
    "images": {
      "theme_frame": "blood_spatter.jpg"
    },
    "colors": {
      "frame": "#faf7f7",
      "tab_background_text": "#bf1f1f"
    }
  },
  "version": "2.0",
  "name": "Blood Spatter",
  "manifest_version": 2
}