Leaf decorations are colour objects / shapes to be shown between the leaf node labels and branches:
The tree:
(A:0.1,(B:0.2,(C:0.3,D:0.4)100:0.05)100:0.1)90:0.43;
the dataset:
!defaultstrokewidth 0.7
A triangle,red:red
B triangle,white:red
C triangle,white:green
D triangle,green:green
A decoration shape can be written as :
shape,fill_color[:stroke_color](_stroke_color)
Note
Supported color shapes
!defaultstrokewidth 0.7
Example 1:
!defaultstrokewidth 0.7
A star,red
B rect,red check,green
C star,white:red triangle,white:green
D circle,white:green
Evolview supports collapsing at internal nodes; collapsed nodes are treated as leaf nodes. It is therefore very straightforward to add leaf label decorations to a collapsed tree. See here for more information.