a11853da_Legends__ggplot2___yyy
[Description] Manually-specified values (e.g., colors, point shapes, line types) [yyy] 
manual
h u e
m a n u a l
g r a d i e n t
g r e y
d i s c r e t e
c o n t i n u o u s
Legends (ggplot2)
yyy