hex color doesn't work

[advince]

i tried to send the command : flux_led.py 192.168.1.100 -c "#FF0000" but i get :
Usage: usage: flux_led.py [-sS10cwpCiltThe] [addr1 [addr2 [addr3] ...].

flux_led.py: error: bad color specification

but if i try to send flux_led.py 192.168.1.100 -c 255,0,0 it works