You can still change forum theme back to the old one, this ones has a Minecraft themed background for the top half of the site (I do plan do update that background much more often)
Let me know about any problems with it, if it don't look right or whatever, I'll probably still be doing more updates to it.
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Edit.... seems like only newer Firefox versions 16+, IE 10(maybe) and Opera 12.50 support the new design properly.. No version of Chrome seems to render properly (very odd)
If you use Firefox then you can goto your profile and 'change' the theme to newer Kraftzone one.
Here is a picture of what it looks like on Firefox