<p>This car was parked at the curb in front of the Portland City Hall that was illuminated with "pink" light in support of Breast Cancer Awareness during the month of October.  From the other side the car is white. as seen in my photo from two days ago.  
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I did not find any official statement as to the reason for lighting City Hall but at least two people posted photos of the pink City Hall and associated them with Pinktober.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/12357841@N02">Paul VanDerWerf</a> from Brunswick, Maine, USA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/pavdw/30602875317/">Pink BMW</a>