I think there is also an issue with your randomHex function - it will never return #ffffff since:
randomHex
#ffffff
Math.floor(Math.random() * x)
can only ever return values from 0 to x-1. You need to use Math.round()
0
x-1
Math.round()
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I think there is also an issue with your
randomHexfunction - it will never return#ffffffsince:can only ever return values from
0tox-1. You need to useMath.round()