Hi Boris,
I see a couple of options here:
– If the color of the button and border radius the only items you want to change then we can consider using some CSS.
– Another option is to create a block element content template so you can achieve everything you have in mind using GenerateBlocks without any CSS:
https://docs.generatepress.com/article/block-element-content-template/
If you want to go with CSS, can you link me to the page in question?
Let me know 🙂