If I stack commands by hitting ctrl-enter between lines(this is called "scripting" in some circles, but is not scripting in the MUSHclient sense <g>) only the first line of the echo of it is colorized in my echo color when I send the message. The rest appear in my normal output color. Try opening up a MUSH and typing:
First line[ctrl][enter]
Second line[enter]
With echo on, and you'll see what I mean.
First line[ctrl][enter]
Second line[enter]
With echo on, and you'll see what I mean.