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This is a camera problem and not a ros driver issue. You can confirm this by using a dedicated viewer such as guvcview or the Orbbec Astra Pro's camera and seeing if the picture looks the same. If there is any check box or slider that relates to white balance, try messing with it. If it doesn't change anything, rest assured that that is the best you will get with that camera.

If you would like a better RGB image you should use a better dedicated RGB camera such as the logitech C920. Another slightly more pro and not much more expensive would be a USB3 color camera like this one: https://www.e-consystems.com/wide-temperature-range-hdr-usb-cameraboard.asp

Good luck!

PS. Always look for the more reasonable solution to the problem before committing endless hours to going into the rabbit hole that is messing with linux uvc drivers ;p