Thats what i thought the law here was, as long as you could not see it from the front or rear, you were fine. Mine don't even shine on the ground, just the 4 side slits in the fairing. I called the police dept and they said no and gave me the regulation for it. here it is.
BLUE LIGHTS
The Honolulu Police Department is reminding the general public that they are not allowed to use blue lights on their motor vehicles. A number of car alarms are using flashing blue lights to indicate that the alarm systems are activated. This is a violation of the Hawaii Revised Statutes (HRS) and we will take enforcement action when necessary.
According the Section 291-31.5 of the HRS,
"No person shall knowingly operate, affix, or cause to be affixed, display, or possess any lamp, reflector or illumination device which appears to be the color blue upon any motor vehicle, motorcycle, motor scooter, bicycle, or moped."
State law goes on to say, "This prohibition does not apply to factory-installed instrument illumination." Any violation is punishable by a fine of up to $1,000 or up to one year in prison or both.
They say no blue lights at all, not even if bike is parked with noone on it and it is turned off. I can still be fined.