I like eye-candy as much as most, but I urge caution. Over the last two decades there have been numerous applications that modify the Finder GUI. They often require considerable RAM and may slow down booting and window re-drawing at best. They can cause serious system problems at worst.
An important note is relevant here. Many Mac users are familiar with "Haxies", almost all of which are clever and fun, and productivity-enhancing. The problem is that haxies OFTEN create conflicts with other software. This is not as bad a situation as it was pre-OS X, but it is very well known to software developers. This is not apocraphal. I have experienced this on more occasions than I can easily recall.