Change button background color and text color on one button only

Site URL: https://northbarcellars.com/

Just want to change the background color and text color of one button. Or in only one index section if that's easier. (The Tempranillo section/page.)

Brine 7.0. Here's the site: https://northbarcellars.com/

Hi. Which button?

@tuanphan I had erased it, but just put it back. It says "BUY." The fill color is blending in with the background. I would like to change the color in just this button. 

25 minutes ago, mallorycs said:

@tuanphan I had erased it, but just put it back. It says "BUY." The fill color is blending in with the background. I would like to change the color in just this button. 

You can use this

#tempranillo-info .sqs-block-button-element {
  background: #000;
  color: #fff;
}

@bangank36 Awesome, it worked, thanks a ton!!!