I'll see which looks better out of red or blue, for effects I can do alot so it's kinda hard to list.  Photoshop has tons of different things which are very easy to add make make look good.  You can see some of the things I can do on the coldboots I've made that are on the front page, things like glows, strokes (borders), embossing, and flames (I'm not that good at flames).  There are other things I can do too though, so if you have an idea of how you want it to look just let me know and I'll see if I can do it.  If you don't have an idea then I'll just see what I can think of to make it look cool.