Decoration of the segments and angles
There is no fast way (or at least we do not know it) to decorate segments and angles. However, it is one of the most frequent operations when constructing drawings for the classes.
For example, in Geogebra Geometry it is 6 clicks and opening 4 submenus. Changing color in comparison is 3 clicks and one menu.
It would be very convenient if decoration was in the fast menu