Examine source code of Soft Blues

{
  "theme": {
    "images": {
      "theme_frame": "topnav.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Soft Blues",
  "manifest_version": 2,
  "description": "A soft gradient, with fine textures, makes this easy on the eyes, but still has an appealing design."
}