On new installation, C/C++ Fonts and Colors are grey

### Apache NetBeans version

Apache NetBeans 29

### What happened

After re-opening a C++ project the source/header file code was grey in all displayed text, including comments, keywords, brackets, ... . Previous color settings not retained.

Tools->Options->Fonts & Colors
1. All Languages does not list C/C++
2. Default options are good but not applied
3. Changing comments from green to orange caused defaults to be seen

### Language / Project Type / NetBeans Component

C/C++

### How to reproduce

1. Install NB 29
2. Open NB 29
3. Re-open a C++ project
4. Display a header/C++ file

### Did this work correctly in an earlier version?

Apache NetBeans 26

### Operating System

Windows 11-64 Professional

### JDK

JDK 25

### Apache NetBeans packaging

Community provided installer

### Anything else

It seems that setting for current (NB 26) installation are not recovered when NB 29 is installed.

### Are you willing to submit a pull request?

No

Start in the Fonts & Colors options and C/C++ project reopening flow, comparing how settings are recovered between NetBeans 26 and 29. Reproduce on Windows 11 with JDK 25 using the listed steps; done means C/C++ appears under All Languages and default or customized colors are applied after reopening the project.

Written by the indexing model from the issue text.