Question: I was installing LAMP and I accidentally "chmoded" with -R my hole home user folder.... (`sudo chmod 755 /home/user -R`) but now my desktop themes won't load... I'm Using the Mate version of Debian Jessie... How to get things back to normal? or what's the normal chmod config for my hole home user folder?

Can anyone help out?

Answer: 
I don't believe there's a simple way to undo what you have done. The standard response is to recover everything from your last backup - but not everyone has backups.

The only other option I am aware of is to fix the permissions manually. That means you need to know what the original permissions were.

You could create a new user, switch to that user, set up the software and themes you want to use, and then compare the permissions on the files in the new user directory with the permissions of the files in the old one, and fix the old one.
Ok Found a solution here... Copy All Files to a NTFS partition... Format or Create another User and Copy back the files you need to the new system or the new user account... Done...