Change the color of the dropdown in the navbar element

The community member is trying to change the color of the dropdown in their navbar element, but the dropdown list component remains white in the preview even when they modify it to transparent or another color. They want to create a dropdown with a blurred background. A comment suggests that the community member should make sure the dropdown is open first, as the dropdown menu is styled based on a combo class which is the "green open class". The comment advises the community member to select the component, go to settings, show menu, then select the dropdown list to see the "green open class combo".