We haven't made many changes to the syntax coloring since the photon redesign two years ago. There are actually new updates in the works for the Photon color scheme, so we'll be able to take some direction from that. Meanwhile, here are some of the issues I've noticed:
Purple and Indigo (in dark mode): A touch too dark/low-contrast.
Magenta: Maybe a little too vivid. Especially noticeable with blue-light filtering.
Blue+Magenta combo for property:value lists - seems too colorful, but darkening the magenta could fix this.
Yellow warning background color (used in Console and other places) seems a little too yellow
We haven't made many changes to the syntax coloring since the photon redesign two years ago. There are actually new updates in the works for the Photon color scheme, so we'll be able to take some direction from that. Meanwhile, here are some of the issues I've noticed: