Change all the missing colors to match the CPK colors used in jmol

[iribirii]

No description provided.

[briling]

Hmm I don't know, in my mind most metals are kinda gray... Also a bit weird difference between La and Ce, is it supposed to be like that?

[iribirii]

The colors are taken from the CPK colors 🤷‍♂️ (https://sciencenotes.org/molecule-atom-colors-cpk-colors/)

that is the color code used by jmol and other visualisation software. But there are plenty of color palettes, I just selected that cause is the one I'm most used to

[aligfellow]

Could this be an optional flag or something? The same could be applied to colours in xyz2svg too - since cpk are fairly standardised having a --cpk flag could be useful in either/both

[iribirii]

True I didn't think about xyz2svg, I should apply it there too 💀 at least in my fork hehe

[briling]

Thanks @iribirii @aligfellow ! I'll add is as an option

and thank you @aligfellow for the PRs for xyz2svg, I'll merge over the weekend/next week