Examine source code of Project Diva

{
  "theme": {
    "images": {
      "theme_frame": "Hatsune_Miku_PD_FireFox_Header_by_olivaaa.jpg"
    },
    "colors": {
      "frame": "#016e09",
      "tab_background_text": "#87006e"
    }
  },
  "version": "2.0",
  "name": "Project Diva",
  "manifest_version": 2,
  "description": "i made this persona because i love hatsune miku!"
}