TFT display color keeps getting set with gradient


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, .

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