Hi @steeley1,
You should be able to make customizations by using Appearance tab while editing your popup in Hustle.
If you’re having issues with this you can also use CSS to make changes, I took a liberty of checking your site and writing up some CSS to match the button with rest of your site.
All you need to do is go to Appearance tab mentioned previously, scroll to the end of page where you will see Custom CSS option.
Enable that and paste this code:
.hustle-button {
background-color: #000!important;
color: #fff!important;
border: none!important;
font-family: 'Poppins',sans-serif!important;
font-weight: 300!important;
}
button.hustle-button.hustle-button-submit:hover {
background-color: #aaaaaa!important;
}
Save the changes and that should do the trick.
Cheers,
Predrag