Black text on gray background in chrome sound control window

[Slenkis]

I installed this topic. But in the sound control window, the text is black on a gray background. It is impossible to read.

OS: Manjaro Linux x86_64
Kernel: 4.19.88-1-MANJARO
Shell: bash 5.0.11
Resolution: 2560x1440
DE: GNOME 3.34.1
WM: Mutter
WM Theme: Matcha-dark-azul
Theme: Arc-Dark-solid [GTK2/3]
Icons: ePapirus [GTK2/]
Terminal: gnome-terminal

Can I manually fix this? in which file to change the color of the text?