Tasmota flashed sonoff B1 start up colour

Hi,
Ive just flashed and got my first Sonoff B1 RGB light running. evrything is running well through MQTT. However, if i turn off the light while it is in a certain colour, it stays that colour when switched back on. is there some configuration code that i can add so it always starts in a bright white colour no matter what color it was set in when turned off? maybe something like initial_dimmer: 100 and initial_color: 0,0,0,0,255 or whatever the code is for white light.

Hope someone can help.