I'm not sure if everyone noticed, so I'm posting this up again (but as an announcement this time). To add a bit of variety a couple of different styles have been made available for the forum. This feature of allowing your own styles hasn't really been offered on this forum before and I thought it was a shame.
We have the standard full-width SubSilver2 that we're all used to from PHPBB2... but now you can try out a couple of alternatives (which by the way look better when browsing the forum on mobiles).
There's SubSilver2 Slim, which is what we're used to, but slimmer;
and ProSilver, which is the default PHPBB3 style which I've also slimmed and adapted to accommodate our banner.
I know a lot of people don't like change and will stay with what they're used to, but if you fancy a different look for the forum then the option will always be there and you can decide for yourself how you like to view the site
Now time to spam the site with load of falling snow
*joke*
Christmasify the forum 
