Chai – It is immaterial whether the car space can be seen by the public. The owner’s corp is concerned about is whether anyone from the OC can see it, particularly from the common property. If there are no walls or door then anything that you paint on the floor of the car space can be seen by other owners and is therefore a change in appearance and therefore a breach of the by-law. If the car space was to be painted then it would clearly appear different from all other car spaces.
The by-law that deals with the appearance of a lot is basically to maintain the uniformity and sameness of the appearance of the lots, and that would include the car spaces. Some schemes take a strict approach and others are more lenient.