The correct answer is 'Display settings,' as this is typically where color, brightness, saturation, and contrast can be adjusted. Changing the display settings can often correct color issues without the need for more invasive troubleshooting or hardware replacements. Checking for a software update may resolve some issues but is less likely to be the immediate cause of color problems. Resetting the device to factory settings is a more drastic measure and should only be done after other troubleshooting steps have been exhausted.