I set the display color to red, and get this result.
color keeps getting set with white gradient.
I believe it may be due to a display setting.
Here is the display showing green. When I re-upload the code and the Arduino goes into the ready or initial state,
it displays the perfect green color I want.
I tried changing the gamma curve, setting sleep/idle mode, but none of these worked.
The display module I am using is the ST7735 serial 4-pin, connected to an Arduino Uno.
Here is my wiring diagramm, .