Whenever you’re working with multiple photos in the same file in Photoshop, you’ll notice that the colors often don’t match. Choose the layer you want to change, and go to Image>Adjustments>Match Color. In the Match Color dialog, choose the layer from which you want to copy the color in the Layer drop-down menu near the bottom, adjust the Fade slider, and click OK. This will get the job done quickly and easily. 

This tip previously appeared in Colin Smith’s Photoshop Tips column, in the May, 2019 issue of Photoshop User magazine.