In most states blue and red are reserved for emergency vehicles. Other colors are allowed. As someone stated earlier, do not ride with red or blue lights on - only parked. I have yet to ride through a state that allowes red and blue. However, here in South TX it's a different story. Most cops don't care as they have more important things to worry about - like the Mexicans killing each other down here on an hourly basis. Naaa, it's not that bad. It's just the media tends to stretch the truth a bit.

 

As previously stated, Red and Blue lights are usually prohibited, on the road, and are for emergency vehicles only. You can, USUALLY, have any color OFF ROAD (ie: parked, etc).

 

Better be careful using the "parked" rule of thumb....Parked on a public street will get you a ticket in some locations.

 

Florida will get you a ticket if moving.... any color.

 

Just use a different color.

 

I have over 200 blue ones on my bike and ride with on all the time never a problem I asked a motorcycle cop and he said the law was just past to allow them

 

I'd make sure you don't have any blue or red showing to the front. If you do in Wisconsin you will more than likely get stopped and handed a pretty little pink piece of paper with a court appearance

 

I have Orange on my bike which is legal in Texas, in fact here is the Texas law on lights

§ 547.305. RESTRICTIONS ON USE OF LIGHTS.

(a) A motor vehicle lamp or illuminating device, other than a headlamp,
spotlamp, auxiliary lamp, turn signal lamp, or emergency vehicle or school bus warning lamp, that projects a beam with an intensity brighter than 300 candlepower shall be directed so that no part of the high-intensity portion of the beam strikes the roadway at a distance of more than 75 feet from the vehicle.
(b) Except as expressly authorized by law, a person may not operate or move equipment or a vehicle, other than a police vehicle,
with a lamp or device that displays a red light visible from directly in front of the center of the equipment or vehicle.
(c) A person may not operate a motor vehicle equipped with a red, white, or blue beacon, flashing, or alternating light unless
the equipment is:
(1) used as specifically authorized by this chapter;
or
(2) a running lamp, headlamp, tail lamp, backup lamp, or turn signal lamp that is used as authorized by law.
(d) A vehicle may be equipped with alternately flashing lighting equipment described by Section 547.701 or 547.702 only if
the vehicle is:
(1) a school bus;
(2) an authorized emergency vehicle;
(3) a church bus that has the words "church bus" printed on the front and rear of the bus so as to be clearly
discernable to other vehicle operators;
(4) a tow truck while under the direction of a law enforcement officer at the scene of an accident or while hooking up
to a disabled vehicle on a roadway; or
(5) a tow truck with a mounted light bar which has turn signals and stop lamps in addition to those required by Sections
547.322, 547.323, and 547.324, Transportation Code.
(e) A person may not operate highway maintenance or service equipment, including snow-removal equipment, that is not equipped with lamps or that does not display lighted lamps as required by the standards and specifications adopted by the Texas Department of Transportation.
(f) In this section "tow truck" means a motor vehicle or mechanical device that is adapted or used to tow, winch, or move a
disabled vehicle.

 

A person may not operate a motor vehicle equipped with a red, white, or blue beacon, flashing, or alternating light in TX. http://www.de-luxcycle.com/laws_on_lighting.htm

 

http://mlis.state.md.us/2008rs/chapt...38_sb0713T.pdf
The use of "light admitting diodes" while riding and blue dot tail lamps just passed in Maryland last year. but you still can not use blue or red lights.
Why not white?