Hi all,
After being unable to find a solution on posts dealing with a similar issue, I have to ask for help.
My problem is that, when I was creating my custom color scheme (under the Breeze dark theme), everything was changed perfectly apart from the default dark-blue color of the window title bar, both on active and inactive windows. I ensured that in all settings (color options) that color wasn't present anywhere at all, yet still it remains unchanged... any tips?

I'm running KDE Neon 5.24 (Plasma version 5.24.1, Framework version 5.91.0)

Thanks in advance!

If you edited the color for breeze dark itself, it had to be done as root. If you created a new color scheme, based on breeze dark it should show. Unless you're using a window decoration that doesn't support titlebar font color. https://imgur.com/a/2edc0pp