Ribinsidecolor specifies a color to be used for the insides of peptide/protein helix ribbon segments. Only a single ribbon inside color can be defined per molecule model. Even if only particular atoms are specified, the entire molecule model will be affected. The command ~ribinsidecolor sets the color to none (no color assigned), making the ribbon insides match the outsides.
Color_name can be none or any color name that specifies a single color.
Ribbon inside color can also be changed with Actions... Color in the menu, the Selection Inspector, and the molecule model attributes panel.
See also: ribbon, color, ribcolor, modelcolor, rainbow