[PyMOL] ribbon-like with one color

[Mario Sanches]

I am trying to color a structure with a ribbon like feature but not 
going from blue to red, but instead, using differente blue hues (or red 
hues, etc). Is that possible?
Thank,

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Mario Sanches
Laboratório Nacional de Luz Síncrotron
Cristalografia e Espectroscopia de Biomoléculas
Tel: +55 19 3512 1109