Dark mode labels text not always visible

Summary

Some labels use dark gray text and as a result, in dark mode, the text isn't visible. See ~"group::project management " below:

Screen_Shot_2020-07-13_at_1.01.43_PM

(Summarize the bug encountered concisely)

Steps to reproduce

Apply dark mode, navigate to an issue with a groupproject management or ~"group::portfolio management" label. Here's an example: #218171 (closed)

What is the current bug behavior?

Stage group label name isn't visible in dark mode when text is dark gray.

What is the expected correct behavior?

I believe this is still TBD by the Foundations team, but my recommendation is to adopt the primary color associated with the label.