Aide prélèvement de zone GIMP

[Ofnuts]

A completely different solution:

• Make a selection on the deck (Free select in polygonal mode)
  
• Use the Dodge/ Burn tool (Dodge mode) to lighten it in a couple of passes
  

   

• If necessary use the color picker to sample the lighter part on a wide area, and apply the color in "LCh Color" mode