Is the style of options in EuiComboBox customizable?

[jusa3]

The drop down menu in EuiComboBox can be styled using the inputPopoverProps property (from the docs: "Allows customization of the underlying EuiInputPopover component (except for props that control state)"). Is it also possible to style the options in the drop down menu?

My problem is that when I disable the global styles in EuiProvider, my component looks like this:

What I want it to look like (without the global styles but custom styles):

What I found out:

• EuiComboBox uses React portals, so custom styles can't just be passed down through css classes in the component
• Modifying .euiComboBoxOptionsList {} has some effect
• Modifying .euiComboBoxOptions {} has no effect

Key information

EUI version: 97.3.1
React version: 17.0.2
Build tool: Rollup

Follow-up question for #8203