At the moment there is only an unsupported unofficial solution:
Go to fontello.com, look there which icon is useful for you. Download it, find the file fontname-enbedded.css and copy the string which contains the long data:application/octlet-stream like this one:
@font-face {
font-family: 'mashicon-subscribe'; /* This name must be changed to the class name of the button you are updating */
src: url('data:application/octet-stream;base64,d09GRgABAAAAAApEAA4AAAAAEowAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABPUy8yAAABRAAAAEQAAABWPeFIoWNtYXAAAAGIAAAAOAAAAUrQERm3Y3Z0IAAAAcAAAAAKAAAACgAAAABmcGdtAA...);
}
Copy the code above to your mashshare custom css followed by the lines:
.mashicon-subscribe .icon:before {
font-family: "mashsb-subscribe" !important;
content: '\e800' !important; /* This must be changed to the code of the fontello.com icon */
}
We’re aware of the fact that this is not an easy solution for non-developer person or inexperienced developer. That’s why we’re planning to add custom Mashshare icons in the future.