Board Thread:Support Requests - Getting Technical/@comment-4936572-20170329012212/@comment-168424-20170330183712

For the color scheme issue, you will need to use CSS which you can text by putting it in Special:MyPage/wikia.css based on info here: Styling your infoboxes blog by Trollocool

After you get it the way you like, you'll need to get an admin to put the CSS in the wiki-wide CSS page.

As for the picture problem, you'd probably have to take a screenshot and show us, since it's not clear what the problem is.

Lastly, since you're using a portable infobox, your questions are better asked at the Help, Questions and Answers board of Portability wiki.