[chimerax-users] remove the lines between C-alpha atoms in a helix

Dear ChimeraX users, Question 1: When I display the C-alpha atoms in a helix as spheres, I always get lines connecting these atoms. Is there a way to remove/hide the lines? show /A:1-15@CA target a Question 2: Is it possible to just color a helix, not a whole chain, in a rainbow? rainbow /A:1-15@CA By default, the rainbow spans the whole chain (residues 1-200), and residues 1-15 are colored from red to orange. Is it possible to color residues 1-15 from red to blue? Question 3: Is it possible to color a helix in two colors - the outside (e.g., red) and inside (e.g., white) in different colors? Many thanks in advance! Steve -- Steve Chou