Missing Ldraw Colors

[Ryan Howerter]

Based on the picture from Ryan H. I would say it ought to be like this:

334 should be mapped to new code 300 - Metallic_Copper
335 should be mapped to 82 - Metallic_Gold
336 should be mapped to 80 - Metallic_Silver

It looks to me as a "flat" metallic paint. Not a mirrorlike chrome plated surface.

I don't understand why Ryan has placed a Chrome_Gold crown and a Chrome_Silver lightsabre next to the three painted parts.
Maybe to illustrate the confusion? Two different surfaces on the same code?

That's because Lego has used "335 Gold Ink" to refer to both Chrome Gold and Metallic Gold coatings.  From what I've seen, Gold Ink is sort of a catch-all for any gold coating now. Same with 336 Silver Ink.