Examine source code of Firebolt

{
  "theme": {
    "images": {
      "theme_frame": "Header.png"
    },
    "colors": {
      "frame": "#c4c4c4",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Firebolt",
  "manifest_version": 2,
  "description": "That's my first persona.\nI'll try making the next one darker, cause I don't like bright colors =("
}