stretching background color of multiple cells to be same height within Row

Hello

I’m using a multiple row configuration in SiteOrigin. All cells have different amounts of content, but I’d like the color backgrounds to all be teh same height regardless of the content.

I’m using the “Stretch” setting but it still comes up just short.

Here’s the site. I’d love for all those colored rows to align at the bottom…
http://siliconvalleywie.org/agenda-2/schedule/

How can we get that to happen?

Thanks!
J