[BUG] incorrect theme colors on macOS in zsh

Describe the bug

Terminal colors on macOS 12.4 (Apple Silicon) in zsh are completely wrong.

To Reproduce

Run bpytop on macOS 12.4 (Apple Silicon) in zsh.

Expected behavior

Should display correctly.

Screenshots

Info (please complete the following information):

• bpytop version: 1.0.68
• psutil version: 5.9.1
• (Linux) Linux distribution and version:
• (OSX/FreeBSD) Os release version: 12.4
• Terminal used: zsh
• Font used: Basic profile
• Python version: 3.9.13