Here's a concept design of what I was thinking. Keep in mind that this is rough and needs tweaking and many elements on pages haven't been adjusted for the darker theme:
https://www.warcraftmounts.com/index2.php
Also, here's a sample mount page:
https://www.warcraftmounts.com/mount2.php?mountid=1668
(Basically, change the url for any mount page from 'mount' to 'mount2' and it should use the test theme)
Thoughts?
![Smile :)](./images/smilies/icon_e_smile.gif)