Applying theme colors to XY chart properties

I have a perspective app that currently takes advantage of the built in themes for styling. Unfortunately, it seems the title color and axis colors for the XY chart do not want to use these themes. (putting in "--neutral-80" for the color fields just makes them black despite the current theme).

For the title, the workaround there would be easy by just using a standard label component, but for the axis, I'm having trouble thinking of a way to make the colors obey the built-in themes. Does anyone have any ideas?

try var(--neutral-80)

Unfortunately it does not like that

Annoying as it is, it should still work. I have those "errors" all over the place in my project. Try it with one of the more "ridiculous" colors (--seq-1)