In most European cities they paint the asphalt within the bike lanes red:
College of Urban Planning and Public Affairs
http://web.pdx.edu/~jdill/images/Leu...ike%20lane.jpg
I think it really helps delineate the cycling space psychologically. You're less likely to drive into that coloured space I imagine, than with it being unpainted (as it is now).
I've noticed the city has fill painted some parts of the bike lanes (e.g. north end of Burrard, entrance of Stanley Park, etc.)
Why not go all the way? Do the rest I say!!