Photographing products with different colors can be time-consuming, especially for the products that have exact designs and shapes. 
Why don’t you focus on creating a hero image on one of the products and change color in the post process?
What if your client has given you a specific color that the product image needs to be, and match the current color to the target color exactly? 
In this video, I am going to walk you through this color-matching process in Photoshop. You will not need to worry about the color accuracy any more!
 
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More related video: 
The BEST way of using Pen Tool in Photoshop | Photoshop Tutorial Series https://youtu.be/GSFEQa_yfQ0 
How to create soft shadow in Photoshop | Photoshop Tutorial Series https://youtu.be/Kg5ShU4_KXU 
How to create hard shadow in Photoshop | Photoshop Tutorial Series https://youtu.be/6jMZDFRTloc