RCA BD20TF10 - DVD won't change color quality

Hi

I just bought this RCA BD20TF10 TV-DVD Combo.
When playing a DVD, there's no way to change the quality of the color which appears dark and red. There is a display settings in the DVD menu, but you can't find the way to do it. You can do that in TV mode, but the preset won't stay when changing to DVD mode.
On the other hand, the Glossary menu describes how to do that from the Display menu, but the option is not there...
The instruction book doesn't say anything about it either...it's so strange
Any ideas? Feel free to email me direcly at
[email protected]
you'll have to delete the two - between the @.