Wrong color values on Ras.Pi-Pico and waveshare LCD

[AchimJenne]

The TFT_eSPI lib- implementation is great for me and I like it, because it is helpful and flexible for my designs!
I am using TFT_eSPI, TFT_eWidget (latest) and the Arduino IDE (2.3.4).
My Arduino-designs are running on Raspberry Pi Pico(RP2040) and the waveshare 3.5" (Pico-ResTounch-LCD3.5, SPI, ILI9488, 480x320 pixel, https://www.waveshare.com/wiki/Pico-ResTouch-LCD-3.5)

My problem is, the color is not right - it has the 1-complement value of the right color.
I fixed it for my designs in the lib- code, but after an update ... (the problem was back)
At the moment, I am doing the complement in my designs, like "~TFT_WHITE" ... . It works fine but it's looking :| and bring up some additional warnings from the c-compiler ('unsigned conversion from 'int' to 'uint16_t').
Q: ist it helpful and possible to fix it in the lib?
May be this Pico/ILI9488 is a very special combination and If I am the only one, the fix is not needed. But this LCD was offered any more in Germany (https://www.berrybase.de/3-5-zoll-touch-display-modul-fuer-raspberry-pi-pico-65k-farben-480-320-spi)
Does it make sense to implement this correction?