Good question but its hard to get accurate statistics, the thing is ... it is super easy to run gmail using the default mail app http://www.hongkiat.com/blog/gmail-on-iphone/ rather than having to install a new application entirely.
I would thing that rate is largely base on desktop. Just my thought though
Thanks for the comment and I appreciate your contribution, I hope to have more.
The template works out of the box depending on the row you choose to use it and I never had to modify anything except the colors, that was the idea. More like Bootstrap which you can use as a core foundation that has all the browser fixes in place. I am currently brainstorming how I can improve the patterns and structure while I keep the core fixes.
Maybe you can also suggest any row you would like to add.
Can you create a new wrapper table which will be a new parent table with background color. Then the old table will be the container with the with and proper center alignment - that way, the parent table background color should be visible.
I hope my idea makes sense ;)
From my experience, the contents of most html emails is picked up from <center> tag or the very first <table> tag. I have similar background color issue with hotmail (web) and applying a background color to either or both tags should fix it.
Can you test and confirm?