With Gecko, you can showing more than one product images with color, please follow this instruction.
The first you need :
Click “Upload Image” to upload the images of this product:
Click “Add Variant” to add variant for this product because this product comes in multiple versions, like different sizes or colors:
Enter Size & Color for Variant section:
+ Size: S -> M -> L.
+ Color: Blue -> Red -> White.
Click “Save” >> of Variant section:
Click “Alt” on image >> Paste color on “” section corresponding to the image:
Click “View” product:
When you select a color, the image will display similar with that color.
Choose product -> Action -> Delete selected product
Hope you success!!