How to Correct Poor Color
Shooting a picture in poor lighting conditions often results in an image that has an unnatural color cast. But fear not, it's easier to color correct an image in the computer than it is in the darkroom. The surefire way to get outstanding scans every time is to scan first with no tone controls (e.g., gamma = 1). Then use the Curves command in a photoediting program to adjust the curves of the image to where the color should be. Save the curve and rescan using Import Curves. You'll get a great image when you scan this time. 
 
   

Step 1
I increased contrast in the shadows dramatically by bringing the image into Photoshop and adjusted its curve as shown 

Step 2
I also added warmth to the picture by separately adjusting the Red curve to give it more dominance. 

 
Step 3
After saving the curve adjustments, I re-scanned using the imported curve. A second scan produced this much-improved image. 
 
 
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