Assuming you have only the car in a the selection(the car is selected), many ways to turn any color into white:
Best IMHO for cars > - Colors/Hue Chroma/ play "lightness" > up+ and "Chroma" < down-
Few others ways:
- Colors/Hue-saturation/zero saturation, lightness full/ need to add Brightness-contrast if it's a bit gray
- Colors/Brightness Contrast/ Full brightness, a bit of contrast
- Colors/Colorize
- Colors/Curves > bring up the dark side like on the screenshot below (you can bring it up a lot more depending your need)
(Curves are quite good like Hue-Chroma)
Example (original photo > https://unsplash.com/photos/gwACoyKkJ1c )
to change a color to another color, try Colors/Map/Rotate Colors... (I love this tool as you don't need to be precise)
Best IMHO for cars > - Colors/Hue Chroma/ play "lightness" > up+ and "Chroma" < down-
Few others ways:
- Colors/Hue-saturation/zero saturation, lightness full/ need to add Brightness-contrast if it's a bit gray
- Colors/Brightness Contrast/ Full brightness, a bit of contrast
- Colors/Colorize
- Colors/Curves > bring up the dark side like on the screenshot below (you can bring it up a lot more depending your need)
(Curves are quite good like Hue-Chroma)
Example (original photo > https://unsplash.com/photos/gwACoyKkJ1c )
to change a color to another color, try Colors/Map/Rotate Colors... (I love this tool as you don't need to be precise)