Version:           4.7 (using KDE 4.7.1) 
OS:                Linux

When entering the Message Tags tab in kmail2 configuration dialog, when changing the configuration of one specific tag, the configuration of the rest of tags is reset to a default, the only kept settings are keyboard shortcut and icon, but Font Color, Font, BG color are disabled and reset. However the one just edited is stored properly.

Reproducible: Always

Steps to Reproduce:
- Go to the message tag dialog, change the settings of a tag, e.g., bg color, save.
- Tag a message in the message list
- Enter again, edit a setting of a different tag
- Save
- The last tagged message has, once again the default bg color instead of the new selected one.

Actual Results:  
The message tag configuration is not stored, thus not properly applied

Expected Results:  
Each tag with its particular configuration