Examine source code of Gray 45

{
  "theme": {
    "images": {
      "theme_frame": "454545_persona_header.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Gray 45",
  "manifest_version": 2,
  "description": "Very basic, just using RGB values of 45.  Made for my use, thought I'd see if anyone else wanted it."
}