Hi sfvan! Happy New Year to you too & welcome to the forum. Recolor tool to the rescue! 1. Set primary color to the shade of orange you want to use. 2. Use color picker tool to select the shade of blue you want replaced by the orange shade in 1. Edit: This should be set as the secondary color - easily done by picking the color using the right mouse button. 3. Wind the brush width up to 80 or something like that. 4. Wind the tolerance down to around 20% 5. Cover the image in sweeping