Table headers are low contrast on default terminal app theme #8292
Description
Describe the bug
I am using gh 2.38.0 (installed via Homebrew) in macOS Sonoma's Terminal.app with a black-on-white theme. Styled text produced by gh is often very low-contrast against the background, and some searching pointed me to gh's GLAMOUR_STYLE environment variable for changing the colors. Unfortunately, no matter what I set GLAMOUR_STYLE to — light, dark, notty, or dracula — the output colors remain unchanged and unreadable.
Output from gh repo list (no GLAMOUR_STYLE):
Output from GLAMOUR_STYLE=light gh repo list:
Output from GLAMOUR_STYLE=dark gh repo list:
