[Vimperator] Change color of command line

[Alec Robertson]

Hi,

I'm trying to change the color of the command line to match the status line. I
found code on the wiki to change the status line colors through userChrome.css:
.hl-StatusLine { background-color: black !important; color: yellow !important; }

But I can't figure out how to set the command line to the same colors. There's
some mention of #vimperator-commandline but any changes I make have no effect, 
eg: #vimperator-commandline { background-color: black !important; }

Any suggestions?

Alec