I’ve been to and froing the LJ FAQ and navigated myself lost.
Is there any way to change the display colors of the friends page?
How do I add a friend. If someone, like Alessia ( Fancy meeting you here. 
hi!) adds me, I can check add in return but how do I add someone who hasn’t done it first?
(P.S. Whoo-hoo for me for unlocking the secret of how to edit the entry. Thought that was paid LJ members only. )
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from the userinfo page
under the title Livejournal, there is a line of options to click, go to “manage” click on “Friends”
then
click on “Edit Friends”
you can write in the journal name you want to add.
to change the look go to “manage” then “customize” then “edit customizations”