A cool, artistic theme can be hard to find without the artistic side overpowering the content side. It is important to keep your content first and foremost, this is the point of the site to being with. For a fun, artistic theme that puts your content first, look no further than Snowglass.
Snowglass is a free theme designed by NodeThirtyThree. I absolutely love the light blue circle design of the header. It artistic, yet simple, and not too overpowering. The dark to light blue gradient of the background helps draw the eye from the artistic header to the content below.
The green contrast in the about box on the sidebar also helps to draw the viewers eye to your content. You obviously want readers to know what you are about, so having this up front and eye catching is a definite plus to the site.