How can I cange the sidebar background colour?

English
, , ,
#1

As per subject, is it something set in a configuration file? Is there a hidden option for it?
Or perhaps an extension?

Personas in the sidebar
#2

Interesting question. What do you mean by ‘sidebar’? Can you provide a screen shot?

#3

Impressum (Legal Info) | Datenschutzerklärung (Privacy Policy)   Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.