Yes, It can be done by using global attribute.


 Just follow these simple steps.


1: Woocommerce-> product->attribute.


2: Click on attribute(color)-> then all variations are listed (black,blue,black-silver,black-green etc).


3: Click on configure terms->as you click on that all variation will list.


4: Select any variation -> click on edit(button)-> there is an option “Display Type” from there you can select thumbnail-image/color/text which you want to display on front end.


5: Now this setting work globally for all global attributes and swatches will show on all products.