Examine source code of Gloaming

{
  "theme": {
    "images": {
      "theme_frame": "NoirH.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#f2e9e9"
    }
  },
  "version": "2.0",
  "name": "Gloaming",
  "manifest_version": 2,
  "description": "black, dark,blackness, candlelight, darkness, dusk, gloaming, gloom, murk, night, semidarkness, shade, shadows, twilight, umbra, charcoal, plain, \n\nDesigned by MaDonna"
}