'/usr/linux/bin/ls --color' on AIX

I have a habit of using GNU coreutils on non-GNU systems (e.g. AIX) for my shell environment, so I install the coreutils package from the AIX Toolbox for Linux on all my machines. My 'ls' is aliased to '/usr/linux/bin/ls --color' to have ANSI colored output. Unfortunately, this has unwanted side effects when piping 'ls' output to other commands, apparently because of some color-related control characters. Consider:

# alias ls
alias ls='/usr/linux/bin/ls --color'

# ls ./foobar
./foobar

# ls ./foobar | xargs /usr/bin/rm -e
rm: ./foobar: A file or directory in the path name does not exist.

However, using the standard AIX 'ls' works:

# /usr/bin/ls ./foobar | xargs /usr/bin/rm -e
rm: Removing ./foobar

Had to break my head a little before guessing this one.