Closing cross (thumbnails)

[tistou77]

Hello

I'm looking for where to change the color of this cross in the taskbar thumbnails
If anyone knows

93609

I had already looked here "Taskbar & System Tray > TaskBand > Aero > TaskBandExtendedUI > Thumbnails & Controls",
I have nothing for a black cross

https://i.ibb.co/MPYVYB3/Capture2.png (https://i.ibb.co/MPYVYB3/Capture2.png)


Thanks so much