ah, well, i guess that's valid. i was thinking it must be something to do with sunrise or time or something... (you can tell how appreciative i am of aesthetics, in that i prefered the previous usgs site to the recent update)
[edit, since i can't reply directly, and probably shouldn't string out a long thread anyway: i do agree with your choice, it looks good as it is. i just assumed it meant something. not sure how you avoid that.]
