Examine source code of Chimaira logo

{
  "theme": {
    "images": {
      "theme_frame": "firefox2.JPG"
    },
    "colors": {
      "frame": "#fafafa",
      "tab_background_text": "#f7f7f7"
    }
  },
  "version": "2.0",
  "name": "Chimaira logo",
  "manifest_version": 2,
  "description": "Chimaira is my favorite band, so I decided to make a persona with their newest logo for \"The infection\" and their band name logo (Chimaira)."
}