[Tig] color in microscopy

[Rob Lingelbach]

Current science news has included articles with accompanying images at  
the tiniest scales.  I wondered if these striking images were color- 
enhanced, or to put it another way, how accurate in color rendition  
are Scanning Tunneling Microscopes.
example images and story:

http://tinyurl.com/2tzbeh

I've done some searching and not found any references on the net on  
the color accuracy of these images.

But I did find notes on some research of
nanoscale fluorescence imaging at super-resolution, using STORM and  
PALM:

http://pubs.acs.org/cen/news/85/i34/8534notw3.html