Hi, there. Thanks for sharing your feedback on the LG TV (OLED55GXPUA) model. We understand how important it is to have a television that functions flawlessly. We strive to provide high-quality products and ensure a smooth and seamless viewing experience. In the meantime, to fix this, turn on the TV and press the [Settings] button on your TV remote. Select [Select Mode] in [Picture]. Select the mode you want to use in [Select Mode]. To change [Color], select [Advanced Settings] in [Picture]. Select [Color]. Adjust [Color Depth] while checking how colors appear on the screen. For more information, visit https://www.lg.com/us/support/help-library/lg-tv-troubleshooting-a-dark-picture--20153130421858. If you need further assistance, please reach out to us on social media @LGUSSupport. ^Juvy