I saw today that the optional skin from U-69 by Wise is historical not correct, like the version by Nozaurio for SH5. Wise used wrong colors for the flag and it must be look like in this screenshot:
See my explanation of my mod here
https://www.subsim.com/radioroom/dow...o=file&id=5876
If I have the time, I can change it to the historically correct version.