Why differet pages show different template color

I settled ante tem , I don't know why, when i add a new page or new category page, it shows diferent color of template and looks like error occured .

anybody saw this before?

somebody... ...

when i change the category name and Sef Alias in the virtuemart the error happens in this way as pic shows.
I don't know why , pls help me

You can show your url here ?

Regards

fine, thanks trundt, http://www.*****.com . if you click the category page it shows as pic i enclosed last floor.
and I will close another same question in other post.

And every page related to virtuemart just displays that way, such as search page category page,payment page so on

Hi,trungdt,do you have any clue?

Hi,trungdt can you help me ?plz