Ok, all by the books:
Put two Color Sample points in the left red part and the right part. I got this vals:
Left red - (254,0,0)
Right red - (239, 28, 38)
Now go to Red chanel and make a rectangular selection of the right part, thats easy. Get back to RGB chanel. With the selection still active create Curves adjustment layer.
In the Curves dialog:
choose Red channel and set 2 points (Input, Output): 0, 15 and 240,255
choose Green channel and set 2 points (Input, Output): 0, 28 and 255,227
choose Blue channel and set 2 points (Input, Output): 0, 38 and 255,217
Put two Color Sample points in the left red part and the right part. I got this vals:
Left red - (254,0,0)
Right red - (239, 28, 38)
Now go to Red chanel and make a rectangular selection of the right part, thats easy. Get back to RGB chanel. With the selection still active create Curves adjustment layer.
In the Curves dialog:
choose Red channel and set 2 points (Input, Output): 0, 15 and 240,255
choose Green channel and set 2 points (Input, Output): 0, 28 and 255,227
choose Blue channel and set 2 points (Input, Output): 0, 38 and 255,217