You can control circle and rounded icons with .rounded, .rounded-2x and .rounded-x classes.
Now, you can control icons sizes very easily with predefined Ultimate classes such as .icon-lg and .icon-sm
Mixed Icons Color
You are able to use more than 10 predefined icon color styeles and you can also make your icon stlyes. Moreover, you can creat unlimeted block styles using Ultimate Icon Styles. Here are some more awesome examples.
Info! You should add .rounded class to make rounded icon style. For circle icons you should add .rounded-x class.