Default foreground font colour doesn't apply to folded code preview in RSyntaxTextArea

[Chr1sps]

Description
When you change the foreground text colour in an RSyntaxTextArea, the colour doesn't apply to
the folded code preview when hovering over the fold indicator.

Steps to reproduce
Specific steps to reproduce the behavior:

1. Create an RSyntaxTextArea.
2. Set the foreground (via setForeground(Color)) to a custom value
   (default foreground colour is black).
3. Install a fold parser in the text area.
4. Collapse a fold region in the text area.
5. Hover over the fold indicator on the gutter in order for the preview to show up.

Expected behavior
The preview text's default foreground colour is the same as the one set to the text area.

Actual behavior
The preview text's default foreground colour doesn't change and stays black.

Screenshots

Library version
3.5.2

Java version
Oracle OpenJDK 21.0.3 (build 21.0.3+7-LTS-152)