suppose you are using a threshold scale for 5 colors like this ``` scale: 'threshold', domain: [400, 500, 600, 700], ``` then the upper most category should be labeld either **> 700** or **700 and above** but not both see here 
suppose you are using a threshold scale for 5 colors like this
then the upper most category should be labeld either
> 700
or
700 and above
but not both
see here
