Text color not always visible

[XanderD99]

Describe the bug
TalkerScreenTheme textColor is not used consistently throughout the TalkerScreen page

To Reproduce
Steps to reproduce the behavior:

1. Create talkerscreen with white background
2. go to talkerscreen
3. you'll see that not all text is readable

Expected behavior
Text to be readable when background is not dark

Screenshots

[XanderD99]

code snippet:

TalkerScreen(
  talker: talker,
  theme: TalkerScreenTheme(
    backgroundColor: context.colorScheme.background,
    textColor: context.colorScheme.onBackground,
    cardColor: context.colorScheme.surface,
  ),
);

[Frezyx]

Hello @XanderD99 !
Thank you for this issue, I will check it in near future