Configuration of my jira profile in black background

[MarionL]

I would like to put JIRA and confluence with a black background instead of a white one

is it possible?

thanks

[Mirek]

Should be technically possible. Please take a look on similar question that was asked some time ago

https://community.atlassian.com/t5/Jira-questions/Can-I-change-the-theme-Skin-in-JIRA/qaq-p/102389

It should give you an idea.