Examine source code of Lyras_Legacy_basic

{
  "theme": {
    "images": {
      "theme_frame": "Firefox_Header.png"
    },
    "colors": {
      "frame": "#660000",
      "tab_background_text": "#b3b3b3"
    }
  },
  "version": "2.0",
  "name": "Lyras_Legacy_basic",
  "manifest_version": 2,
  "description": "Operatic Metal Band's Lyra's Legacy first Persona"
}