All you need is side by side text capsules - use the capsule movement arrows to do that. then you can click edit for the capsule on the right and you will see a background color option to change the text capsule background colors just under the "CAPSULE TITLE" label
ps. you have three choices: white, light gray, light blue. the colors in the selection boxes aren't really clear, (at least on my pc), but that is the order of your choices.
Note: you can only do this on the right side capsule, you CANNOT do this on full size text capsules.
Hope this helps