On who gets which colour

So I've had a feeling recently that more of my matches were being played on Red side than on Blue. So I dug through my match history, looking at each of the 72 normal queue games I've played since New Champion Select launched (unfortunately, which team you played on is not displayed in the summary view). In a very rare example of a person underestimating statistical significance from personal experience, I found that only 25 of the 72 games were played on blue side.

Is this a common experience? Are there other people out there with near-2:1 ratios of team colours? Who is taking up the slack of blue-side games?