Best Practices
vs
vs
-
(fa fa-times)
- Deleting/Removing items. In most cases, use the x icon over the trash icon.
- Closing windows/popovers/overlays
-
(fa fa-trash-o)
- Deleting items permanently
-
Use the trash icon over the x icon when
(fa
fa-pencil-square-o) is also used
-
(fa fa-minus)
- Minimizing windows
- Do NOT use for deleting/removing items
Red
vs Black
-
Red
- Something is being permanently deleted
-
The icon is used with
(fa fa-plus)
or 
(fa
fa-check) icon
-
Black
- Closing windows/overlays/modals
- Something is being temporarily removed and can be readded