Blue text on black background in dark mode is difficult to read.

I use dark mode on my ipad as it’s far easier on my eyes than the regular mode. However, when I read a pdf in the finder, or when I use the app GoodNotes, both render the texts/icons for commands (such as the share icon, or “Done”, or the settings icon, &c &c) as a medium blue on a dark gray or even black background. This is incredibly hard to read, I always find myself hunting for these icons or text, tilting the ipad to catch the room light differently, &c.

Is there any way—by Apple, or 3rd party app—to manually adjust the details of font/icon rendering in dark mode?

To be clear: this is not a problem with color invert, color filters, or any other option under Settings/Accessibility. I’ve tried all those, nothing there enables control over these.

I’m attaching a screenshot of a pdf viewed from the ipad finder below. See that blue-on-gray in the upper right, under the wifi/battery icons? Yeah, me neither.

Any help greatly appreciated.