chrome theme

manifest.json

{
   "manifest_version": 2,
   "name": "Orange frame with distinguishable gray tabs",
   "version": "0.1",
   "theme": {
      "colors": {
         "background_tab": [ 210, 213, 217 ],
         "background_tab_inactive": [ 213, 215, 220 ],
         "background_tab_incognito": [ 38, 39, 42 ],
         "background_tab_incognito_inactive": [ 53, 56, 58 ],
         "frame": [ 247, 99, 12 ]
      }
   }  
}