Could you try to generate code from STM32CubeMX and then from TouchGFX ? What mcu are you using ? Are you using a custom board or an ST development kit ?
Good to hear it solved it :thumbs_up: It isn't always necessary but the color issue made me think that their might have not been a full upgrade of the project, so generating from STM32CubeMX and then TouchGFX Designer is always a good first step when investigating.