Is there a way to draw an "invisible" line?

[christian ridderstrom gmail com]

I know that I can set a line's foreground colour to the same as the 
background in order to make it "invisible". What I'd like to know if there 
is some way to actually set the colour of the line to "invisible"?

I've used this in other softwares, e.g. Tgif, and it's quite useful. You 
can change the background colour without worrying about side effects for 
one. Another thing is that it feels more logical to me to set the color as 
invisible when that is what I mean.

Should I file a bugzilla feature request for this?

cheers
/Christian

--
Christian Ridderström, +46-8-768 39 44               http://www.md.kth.se/~chr