Modify the following plot to change the color of all points to "pink".

ggplot(data = starwars, 
       mapping = aes(x = height, y = mass, 
                     color = gender, size = birth_year)) +
  geom_point()
## Warning: Removed 51 rows containing missing values (geom_point).

Stretch goal: Add title and x, y, and size labels.