Also, I found something weird on colormag theme, if I opened the home page, In one of my menu item i have added three drop down links, but it is showing in blue color already it should be black menu before opening, you can check it on the home page
The logo is being displayed as you uploaded. You can add logo with any size you want. Also, since you’ve added a menu item with homepage link, it shows primary color on dropdown while you’re on the homepage. Thanks.