Use the theme editor to customize the header's components and display cart icon in the header, display search icon in the header, use the transparent header, and upload a logo with inverted color.
Display cart icon in the header
Toggling the Show cart icon option displays an icon of a Cart (or Basket) that will take visitors directly to their shopping cart (or basket) when selected.
Display search icon in the header
Enable the Show search icon option to display an icon of a magnifying glass (the universal "Search" symbol) that opens a search box when clicked.
Use the transparent header
Enable the Transparent header by selecting Enable on home page. This blends the header into the first section, so the first section must be either a slideshow, video, or image with text overlay.
Upload a logo with inverted color
Using the transparent works best when you upload an alternate logo for those pages. You can do that by clicking Select image below Transparent header logo image. For instance, if you have a black logo, create a white version of it and it will appear better on darker backgrounds.