Question about Netatmo Smart Radiator Thermostats + Hub

Here are the contents of the delivery according to the product number:

5 intelligent radiator thermostats, 1 connection module, 5 x 6 radiator adapters (M30x1.5, M30x1.0, M28x1.5, Danfoss RAVL, Danfoss RA, Giacomini), 2 x 4 coloured stickers, 2 x 2 AA batteries, 1 socket.

This product contains four colour options (stickers)
"Give your radiator thermostat a personal touch with one of the four coloured stickers supplied.