You can set the fans to white. From your photos, this is usually a form of RGB software conflict or LEDs starting to fail on the fan(s). If you're using any other RGB software, try temporarily closing them and restarting iCUE.
To troubleshoot the fans:
Look for the RGB header coming off the AIO's pump that's labeled 1. With this header, test each fan individually and see if you can change the fan's LEDs to Green, Blue, and Red. If the fans fail to produce any of these colors, please reach out to our support team, and they'll take a closer look at your setup and look into replacing your fans or AIO under warranty if needed.