`count` produces error with certain `hue` values

[mattrossman]

Reproduction on JSFiddle: https://jsfiddle.net/mattrossman/koph7sub/1/

console.log(randomColor({ hue: "#EF1FE8", count: 2 }))

produces:

Uncaught TypeError: range is undefined

The trace points here

randomColor/randomColor.js

Line 321 in 68e5642

var max = range[1] || 1;