It might have been really old… a while back, in SP 4.x, we had skins… which meant very limited ability to control the way the forums looked… but we did have a series of icons (called icon sets) that you could download to change up the appearance a bit…
but fast forward to the 5.x series launched at beginning of this year… skins were gone and themes were in… with themes, you are in complete control of the appearance… you can easily add, remove or move elements around… SP now has themes that are very much like WP themes… so you have nearly complete control over the appearance of your forum… take a look at our showcase page to see some different examples…
within the sp theme you are using, and we provide 4 with the core package, you will see an images folder… these are the equivalent of the old 4.x icons… you can simply replace those images with any image you choose… we do of course recommend that you make your own theme vs editing one of ours to keep from losing changes on upgrades (see http://codex.simple-press.com/codex/themes/theme-basics/creating-a-theme/)…
or, using the link in our sidebar, we can help you come up with a completely custom theme too…
as to badges… they go with forum ranks, special ranks and usergroups… again, do a google search and find any series of forum rank images you like (here is good one: http://www.theadminzone.com/forums/forumdisplay.php?f=209) and using our admin panel interface can upload the badges to either ranks or usergroups…
hope that helps… but come on back if you have more questions or need more info… we are here to help…