Update classname for grid styles

Hi there,

I’m wondering if you could update the classname you use to apply the styles for the modified colour picker grid.

In the function print_tinymce_style you currently use classes like:

.mce-grid {border-spacing: 0; border-collapse: collapse}

Could you instead use the class now available for colour grids?

.mce-colorbutton-grid {border-spacing: 0; border-collapse: collapse}

This will stop the modified styles being applied to other non-colour related grids, such as the table selector.

Thanks!