[Support request] Signin button and footer backgrounds

Anyone have a suggestion on how I can get the Signin button in the header when hovered and the footer background not to use the nav bar background color? Have tried many combinations of theme colors and custom CSS, but one thing affects another. For instance, if I change the Header Text Hoever color to white for the Signin button, then you can’t see the nav menu items when hovering in the Admin area. A simple solution is for this not to use the nav background color and I’d like the same for the footer. Here is the site:

https://app.webtent.net/ticket/

UPDATE: I was able to get the footer background color to stick with custom CSS using !important.