title: Easiest way to colour regions in PyMOL
body: <p>I have a hemagglutnin protein 1hgf.pdb (<a href="https://www.rcsb.org/structure/1hgf" rel="nofollow noreferrer">https://www.rcsb.org/structure/1hgf</a>) from the protein databank. I want to split it in half colour the top one colour, and the bottom another. Is there a basic way to do so? Otherwise, I would have to select residues that form the top half, and the bottom half, and colour those. Aside to not having this information, I imagine it would be very tedious</p>
  <p><a href="https://i.stack.imgur.com/9vGNr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9vGNr.png" alt="enter image description here" /></a></p>