This is likely due to a rank-based post-color. Head to Admin > Security > Ranks, and make sure that the post color and background color for post is set to nothing, or at least let to an expected color. If you don't have access to that, have your site's super-admin check it out.

unfortunately, that did not fix my issue. I am beginning to think it is something messed up with the computer I use in general. When I make a post using a different computer, everything is fine. Just cannot figure out why on this specific computer it is white. I've updated video drivers and still no change

Would you be able to post a screenshot of the issue for me, so that I know exactly what I'm looking for? (you can just upload it to this thread, using the "File Attachments" option in the Full Reply).

the white is supposed to be the blue that is at the top and in the "File Attachments" box

Check it out now. I made a tweak to the CSS, and it should be good to go. I was seeing the same thing.

thank you! it is fixed