Sometimes when you change brand logo, menu color, or menu position on Theme Option it can happen that those changes that you made are not applied on some pages. This happens because some of demo contents that you have imported have a different logo or menu color that we wanted to change only for some specific pages.
To change that you just need to go to that page and click Edit Page, then when you scroll down a bit you will see Parameters & Options area. From that area you just need to open Page Options > Logo & Menu tab to remove the logo that was selected, change the color of the menu or other things.
Also by going to Page Options > Header Options you can set the header options to take default options that you have set on Theme Options.