In Style Setting Panel, You can manage following.
You can choose which color do you want to use for Flexible Footer Menu.
When you change this setting, the menu design will change.
Facebook ～ Feedly
In other panel in this section is all about each sns icon.
We set default social color, but you can freely change this.
On some social account such as twitter, there is extra form to work Follow or similar feature.
This example is result of that I changed all sns icon color to #545454.
All icon Backgroud color was changed to #545454.