Change appearance of File/Folder context menu

I would like to change the appearance of the context menu for files and folders displayed in the Lister. In particular I want to change the Font style and size, and the foreground and background colours. Since moving to a 1440p monitor, I'd like to increase the size of text in the context menu and make it standout more from my dark themed background. I have searched through so many options in Preferences and Customize, checked this Forum and Reddit, but I'm still no wiser how to achieve this, though I feel sure I can't be the first person to be stumped by this? Could you tell me how to achieve this, please?

Preferences / Colors and Fonts / Fonts / Toolbars is also used for most context menus.

But font size should be the same in Opus as in other parts of Windows, File Explorer, and so on. If fonts are too small in general, you should increase the system display scaling (DPI) setting in Windows rather than increase the font size in lots of separate programs/places.

Thanks for your quick response. I increased the font size using your direction which of course increases font sizes of other elements (no prob, but would have preferred more granularity), and also found to change context menu colour via Preferences/Colors and Fonts/Directory Opus Colors/Toolbars/Menus. As I'd already changed the Windows Context menus via Nilesoft Shell, I wanted to maintain consistency in Directory Opus.

Toolbars can override the global font size, if that solves the problem. Go to Settings > Customize > Toolbars, then select the toolbar you want to change in the list on the left, and override the font for it on the right.