So how PyMOL stores how it shows atoms is that each atom has a colour and a represention, which is a binary number telling what to show. Therefore the colour for
spheres is the same as the colour for
sticks. The only way round this is to copy the object (
create copycat, original and you set copycat differently)
To set the atom you do
select iliketheschaps, resi 200‐221 and name CA+CB
color tv_green, iliketheschaps
show spheres, iliketheschaps
iliketheschaps is a selection. Do make sure the range is a hyphen-minus (character next to 0) as opposed to an en-dash (–) which Word subs and on a mac you get with cmd+-
Now you asked for "gold". This is not a colour in the menu —famous for the colour
limon. Gold is a CSS colour name, but it won't work.
You will have to colour by hex code. Say you want "gold" you need to google the colour name and hex. #FFD700.
color 0xFFD700, iliketheschaps
The Fashion Police have been alerted
This paragraph is in jest.
However, as you may know bioinformaticians are very fashion savvy for colours. Mustard was the in-colour from last year, so you really ought to use mustard (
0xffdb58). This year is all about nectarine (
0xffa168) (which is not salmon —this ain't 2015!). Coral (
0xff7f50) and teal (
0x008080) were from previous years and are still are going strong!