Examine source code of Welsh Flag

{
  "theme": {
    "images": {
      "theme_frame": "welshpersona.jpg"
    },
    "colors": {
      "frame": "#030303",
      "tab_background_text": "#030303"
    }
  },
  "version": "2.0",
  "name": "Welsh Flag",
  "manifest_version": 2,
  "description": "Looks better on a taller header. I created one for myself at 3000x120 that fits in shorter headers real nice, but the website wouldn't let me upload it 'cause of the size :("
}