Using linux, I changed my client's home directory.
After then, when client enter 'ls'(file list command) into consol, I found that all of directory, files, etc color are white.
I tried to change '/etc/DIR_COLORS' file, and copied that into client's home directory but that never work. Even if I tried to input 'export LS_COLORS="di=0;36' command manually, without that client's, every members' work.