Examine source code of BlueMoon

{
  "theme": {
    "images": {
      "theme_frame": "Bluemoon.png"
    },
    "colors": {
      "frame": "#e3dd2d",
      "tab_background_text": "#41bfdb"
    }
  },
  "version": "2.0",
  "name": "BlueMoon",
  "manifest_version": 2,
  "description": "A Natural perspective if moon is blue and stars in the sky"
}