Examine source code of Into the Gray

{
  "theme": {
    "images": {
      "theme_frame": "ffp.jpg"
    },
    "colors": {
      "frame": "#ababab",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Into the Gray",
  "manifest_version": 2,
  "description": "A simple yet high-quality design, great for black-themes as it also stands out, and smooth color gradient so it's not complicated to read."
}