Examine source code of my sprites

{
  "theme": {
    "images": {
      "theme_frame": "mymozillafirefoxtop1.PNG"
    },
    "colors": {
      "frame": "#ff0000",
      "tab_background_text": "#00f742"
    }
  },
  "version": "2.0",
  "name": "my sprites",
  "manifest_version": 2,
  "description": "i got board so i created this"
}