I want to change the color of an object which has different shades of green into different colors and specifying hex as target colors. I want to change the object from green to any hex color I specify and supporting the shades of the green. I know I can switch colors using Rotate Colors feature of GIMP. Though I am limited by the colors on the wheel. I also explored the Exchange Colors option but changing the r/g/b thresholds causes other non-green colors to change. I only want to change the green color and nothing else. Is there an option to do what I want in GIMP?