XF 1.5 Forum Collor change / Categorie?

[blackburn27]

Hello,
I know... it must be very easy to find... but I've been working in the admin area all day and just can't find it now...
Could someone tell me how I can change the background on the index page and add a frame? from the forums



thanks... and sry...

 

[ŽivaAkcija]

using search options https://xenforo.com/community/search/474401/?q=node+background&o=relevance