You can have a separate logo on your blog page.
Click on Settings which is highlighted in Magenta below
Click on Blog Settings
Blog Settings
Add or change the logo by clicking on Choose Photo and uploading the new photo. Change the title of your Blog Page here as well.
Preview or visit your blog page by clicking on the URL. Change the colours by unclicking Use Company Default Colour and then clicking on the colour square to open a colour picker where you can click and drag to colours or can enter in the hex code.
Blog Menu
Add links to your homepage, about us page and more through the menu. We recommend you try to match your website as closely as possible.
Menu Name - the words you wish to appear such as "Sales" or "Contact Us"
Menu URL - the link where you would like visitors to go
Order - Rearrange the links to your liking
Menu Active - turn off links you no longer want active to remove them from the menu