Changing your Button Colors
You can change your button colors and the text on your "Subscribe" button.
Clicking the “Select” buttons next to the input lines will let you choose a color from the color picker, or if you know the hex codes for your website, you can enter the colors right there.
You will see a real time preview in the left side.
Your current theme is pre-selected, if you change themes, you will need to re-save on setting to add the code to your new theme.
These button colors are carried through to the various different buttons on your site.