Use the following css to change the color of all share buttons:
[class^=mashicon-] .text{
color: #6e6e6e;
}
The code sample below are showing how to change the background color of a specific button:Facebook button:
.mashicon-facebook {
background: #2d5f9a;
}
Twitter button:
.mashicon-twitter{
background: #2d5f9a;
}
