No Text coloring

[urgic]

cannot apply color to text

[Zizi64]

Hints:

1. Switch off the “View - Value Highlighting” feature.
2. Switch off the “Cell protection” feature.
3. Please upload your small (ODF type) sample file here.

[EarnestAl]

Another possibility is that you have High Contrast enabled and Use automatic font colour for screen display set in Tools > Options > LibreOffice > Accessibility. After changing those settings you might need to Hard Recalculate to display the colours.