After installing Cinnamox-Gold-Spice, some email content is very difficult to read. The text and background are too similar. How to fix?

[MuhMuhGH]

I am running:
Kernel: 6.8.0-53-generic arch: x86_64 bits: 64 compiler: gcc v: 13.3.0 clocksource: tsc
Desktop: Cinnamon v: 6.4.7 tk: GTK v: 3.24.41 wm: Muffin v: 6.4.1 vt: 7 dm: LightDM v: 1.30.0
Distro: Linux Mint 22.1 Xia base: Ubuntu 24.04 noble

and Thunderbird 128.7.0esr (64-bit) mint-001 - 1.0

After installing Cinnamox-Gold-Spice, some email content is very difficult to read. The text and background are too similar. How to fix?

Attached is a screenshot.

I have never attached a screenshot into this interface before. I hope that worked.

[MuhMuhGH]

The screenshot is easier to read than how it looks in Thunderbird.