Change styles for Table RTE plugin in Touch UI

[#1]

I need to change the table style of the RTE plugin in my own style.

To do this, just add a new class to <table> tag.
For example:

<table class="newStyleTable"></table>

Could you tell me if there is any possibility to change the styles Table RTE plugin out-of-the-box or have to override Table RTE plugin with new styles?

[Aleksandre · Accepted solution]

I think you would be able to use the style system in AEM to apply your custom styles. More here: https://docs.adobe.com/content/help/en/experience-manager-65/authoring/siteandpage/style-system.html

[Aleksandre · Accepted solution]

Thank you for your answer, but I have to add the custom class to <table>, not a component.
If the content author create 3 or 4 tables in RTE, then class "newStyleTable" have to be in each table.
So unfortunately, this answer does not suit me((

[Arun_Patidar · Accepted solution]

Check the Similar customization done for the list plugin - http://experience-aem.blogspot.com/2017/05/aem-62-touch-ui-extend-rte-list-plugin-for-adding-selecte...

[#5]

For adding a new style for a table, I override Touch UI RTE table dialog.
As this example: http://experience-aem.blogspot.com/2018/06/aem-64-touchui-rich-text-editor-table-plugin-extension-su...
And I added setting used for Classic UI: 

<table
    jcr:primaryType="nt:unstructured"
    features="*">
    <tableStyles jcr:primaryType="cq:WidgetCollection">
        <table1
            jcr:primaryType="nt:unstructured"
            cssName="myClass"
            text="Style"/>
        <table2
            jcr:primaryType="nt:unstructured"
            cssName="myClassTwo"
            text="New Style"/>
    </tableStyles>
</table>

 As this User Guide https://docs.adobe.com/content/help/en/experience-manager-64/administering/operations/configure-rich...

Now, I am reading "tableStyles" config and set all configuration to Granite selection field. 

View for creating table dialog

View for editing table dialog 

[#6]

You should be able to overlay the existing component to configure your style in RTE. The following article help you for this:
https://helpx.adobe.com/experience-manager/using/touchUI_RTE_configure.html