The Colors tab of the C/C++ Editor Preferences dialog is one of three places where you set colors. It might be better to call the tab "Syntax" and use the layout of the Java Editor Preferences dialog's Syntax tab (which is better than the C/C++ Colors layout)
Changing product to RHEL.
Agreed that the name of the tab should be consistent. Similarly, CDT has a "General" tab vs. JDT's "Appearance" tab. The layouts of these tabs are now nearly identical, however. Maybe this issue should be raised upstream to see if there was good reason not to name the tabs the same as the JDT.
This has been posted to the eclipse.org feature request and is logged under #80104. I also added that the "General" and "Content Assist" are different from the JDY, although the functionality is the same.