I have tried to post pics in the past but the real difference is, there basically is NONE. LLumar calls their main film charcoal, Solar Gard calls it smoke, etc etc etc. These are all dirivitives of the same color of film. I believe that charcoal is the best way to describe it though. That is the "color" that 98% of the vehicles on the road have on the windows.

Also, no manufacturer really tries to show tint shades/colors online because it is too difficult and the examples have failed miserabley in the past...