Split windows

Hello,

I'll open a ticket to investigate this. Unfortunately, at the moment, we're dependent on a third party library for this part of the UI, so it's possible we can't change these colors easily.

Even if this third party library we use doesn't support this, though, doesn't mean we won't be able to improve this in the future. We've been migrating a lot of controls over to Avalonia which will give us better control over how we display our UI, but this part with the docking of controls will probably take us a little while to get to, as it's quite complex and touches most parts of the application.

I hope this gives you a little more context even if we're not able to address this immediately.

Regards,