Nice addon
I like the Cloudtop the best.

The Landsat 7 bothers me though.
You said it's band 3 and IR, but Band 3 of Landsat is Red, not IR.
Band 6 is Thermal IR.
http://www.infoterra-global.com/landsat.htm

Thing that points this out is if you look at any large mountain range, the tops come out white, but I doubt they are very hot!