adjust identical image to match tone

[denzjos]

Because both pictures have a different grain structure (the one is more blurred than the other), it is different to get a good pixel color to change the color tone. Maybe a solution is to use a color filter and 'grain merge' the color with the picture you want to change. Place the photos side by side and place a grey layer on the picture you want to change (layer mode ' grain merge'). Use the color sliders to get the right color (use the 'Bucket Fill Tool' to change the grey color)