[Goonar]

I want to put a box around each individual posts to separate the post content from the background. I would like to be able to assign it a color and if possible, change that color from page to page.

[ahmetsali]

Hi, it can be possible but it requires more hard work, we can only provide customizations of some lines of code. You can hire someone experienced to do the job for you, if you are not familiar to wordpress-html coding.