Fixed "IndexError: tuple index out of range"
`value = tuple(float(value[i]) / divisor for i in value)`
Was effectively attempting to access the value tuple using an element as an index.
`value = tuple(float(i) / divisor for i in value)`
Uses the elements from the tuple and modifies them.
Ex: (0,0,0,255) becomes: (0.0, 0.0, 0.0, 255.0)
Instead of throwing an error.