Unable to change color of action button ADD TO CART with Porto theme

Hi there,
I have been struggling to change the color of the action button “ADD TO CART” on the product page of my woocommerce shop with the Porto Theme I bought on Envato. I have found and set the colour for the cart icon and the different action buttons except that one.
Could anyone help? Thanks a lot!


Contact with your purchase item author @p-themes right here as a comments

hope they will helped!

thanks for your advice @unlockdesign unlockdesign!
@p-themes: can you please help me out here? Thanks!