Let's take a glance looking at Lithium for XenForo 2 Style. At the very first moments, you could feel that you are falling into a pool of red wine. We created it by 2 main colors: red color of plums and yellow lines with uneven thickness. It all brings down 3-dimension space and regal feelings of the king sat on the throne at the ancient times.
On the other hand, the background and text font are keeped as simplest as it could be. Incorporating all of those details, the style could highlight and bring down all of your content under the users' eyes. Treat all your users like with your God!