Green = slightly green head (with some beige heads mixed in) and a greenish stem
Beige = a sun-bleached beige head and beige stem
 
Here, I distinguish bunny tails as shorter, fatter heads and hare's tails as the longer, more narrow heads. 
 
Stem length plus approximate head length and stem count:
long = 35-55cm; 3-5cm head length; 35 stems. These are all what I call hare's tails.
medium = 15-40cm tall; 3-5cm head length; mostly 40 stems (one bunch shown as 'medium 20 stems). These are mostly bunches of bunny tails but may have a few hare's tails mixed in, and one bunch type is just hare's (shown as 'medium hares'). 
short = 10-20 cm tall; 1-3cm head length; 40 stems, mostly bunny tails
tiny = 10cm tall; 1cm head length; 40 stems, all bunny tails