I have a question regarding coloring of a surface representation of an atomic model. I open the pdb file and turn on surface representation with the command,

surface #1 resolution 6

This works just fine. Then I color the surface by command,

color #1 skyblue

This also works fine.

And then I want to color the surface of only a range of residues using the command,

color #1:50-86 indigo target s

But nothing happens. The reply log says that 1 surface was colored but no color changes is seen in the surface representation. 

Am I missing something in the color command for surfaces?? Any help is appreciated!

Best,

Rasmus Kock Flygaard