After UI update, class='Vibrant Success' button is blue instead of green. How can I make the button green again?

Vibrant Success has been adjusted by the update to also display as a blue in line with the branding. However it is still possible to display a button in green (or another color with the hex code for it). You can do so using the formula below:

"<a class='Vibrant Success' style='border:1px solid #6BBD57; background-color:#6BBD57'>Vibrant Success</a>" 

That one above will now show the button in green and if you adjust the hex color it will update to the button to the corresponding color.