I'm not sure the feature you say exist in the first place. Windows 11 can enforce title bar color (red in my case) buy there is nowhere a "Tab color". Can you point me to a registry setting maybe? Btw, I have no active tab color in other tabbed programs either.
Just an idea: can you color at least the "Little Computer" icon on the active tab to red instead of blue?
It's not like that Windows suggests a color and WinSCP paints it using that color. Windows paints the tab. WinSCP has no control over the painting. WinSCP cannot even change the color (the tab is actually a bitmap image).
So that is the main reason, Windows 11 seeing it's worst days in 2026.
Should put a settings in WinSCP to simply color different the active tab and ignore whatever Windows want to convince you is good enough.
There's no setting. In the latest version the tabs use standard Windows dark theme, which has (slightly) different color or active and non-active tabs (the same way it has slightly different colors in the light mode).
The update is a welcome improvement. A clear active tab color makes a big difference, especially when several tabs are open in dark mode. It would be helpful to have a simple setting to choose the highlight color as well.
Upgraded to 6.7, thanks for the suggestion.
And the color setting is ... where?
Windows 11, dark mode. Many tabs open. It is indistinguishable which one is the active because everything is black, the tab, the menu, the content and adjacent tabs.
Active tab color should be set in dark mode with some red frame or something.