Word 2013 - How to create a new table style from an existing table style?

In Word 2013, lets say I have a few table layouts. For example

Is there any way to create a new table style via the Design tab based on my existing table design, or am I forced to try to emulate this table design by creating a new style that mimics my current table design? I cannot seem to find any way to create a new table style based on my existing table formatting.

the article How to save Table Templates in Word 2013 describes how to set up a table-template from an existing table :

1. Select the table
2. In the Insert tab click the small drop-down arrow residing below the Table icon to display the menu
3. Select Quick Tables and on the right Save selection to Quick Tables Gallery
4. In the window Create New Building Block, give your new table template a name
5. Click OK to save

To insert the table template in the document, go to the Insert tab -> Table -> Quick Table.