For similiar problem (removing colors):

For shell:

cat something | perl -le 'while (<>) {chomp; s/[\000-\037]\[(\d|;)+m//
+g; print ($_) };'
[download]

In generic:

# sth; sth;
 {
      s/[\000-\037]\[(\d|;)+m//g;
 }
# sth else;
[download]

ANSI colors looks like :) ^[[number[;number]m - reset: ^[[m