Examine source code of Chococat01

{
  "theme": {
    "images": {
      "theme_frame": "chococat01_header_bycarlaa.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Chococat01",
  "manifest_version": 2,
  "description": "A header with chococat pattern :) Enjoy it!"
}