I've already gotten warnings from the Police regarding.... no lights or bulbs should be any other colour. I also asked an OPP Officer, he said if he can see any other colour than specified, such as bulbs that are painted blue, purple or any other colour its a ticket... so at the end its the Officer's Discresion, Ont gives the cops too much power to be your judge and executioner all at the same time, same goes for Exhausts being too loud...
http://www.e-laws.gov.on.ca/html/statutes/english/elaws_statutes_90h08_e.htm#s62s11
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Identification lamps
(11) When on a highway at any time from one-half hour before sunset to one-half hour after sunrise and at any other time when, due to insufficient light or unfavourable atmospheric conditions, persons and vehicles on the highway are not clearly discernible at a distance of 150 metres or less, every commercial motor vehicle or combination of a commercial motor vehicle and a trailer having a length in excess of 9.2 metres or a width in excess of 2.05 metres shall carry three lighted lamps displaying green or amber lights at the front, except in the case of a
public vehicle which shall display amber lights at the front, and three lighted lamps displaying red lights at the rear, and the lights of each colour shall be evenly placed not less than 150 millimetres nor more than 310 millimetres apart along a horizontal line as near the top of the commercial motor vehicle or combination of a commercial motor vehicle and a trailer as the permanent structure permits, and shall be visible for distances of 150 metres from the front and rear respectively of the commercial motor vehicle or combination of a commercial motor vehicle and a trailer. R.S.O. 1990, c. H.8, s. 62 (11).
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Red and blue lights to the front restricted
(14.1) In addition to the lighting requirements in this Part, a police department vehicle may carry lamps that cast red and blue lights, but no other motor vehicle shall carry any lamp that casts red and blue lights to the front. 2007, c. 13, s. 17 (2).
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