You can just use styled-conponents on React.

  const Button = styled.button<{ $primary?: boolean; }>`
    /* Adapt the colors based on primary prop */
    background: ${props => props.$primary ? "#BF4F74" : "white"};
    color: ${props => props.$primary ? "white" : "#BF4F74"};
    ...
  `;

  render(
    <div>
      <Button>Normal</Button>
      <Button $primary>Primary</Button>
    </div>
  );