Shoutbox

Okay, now I can see the layout and the colours.  And to be frank, the colour scheme is not good.  Light green, clouded sky blue and dark grey never go good together.  The blue and dark grey could in some cases work, but you'll have to fix the green.

Your post boxes are too far in colours from the background, so make some borders around them.  Alternative, make them in a similar colour as the background, in which case no border is needed.  Because making your foreground looking somewhat like your background might actually be a good idea.

I am not impressed by the choice of typeface.  But I guess I have no better answers.  Also, you might want to style the input and button fields.  Other than that it is fine.  Besides the use of tables, of course.