Why would we want to stop to only 50 shades of grey? Let's see to how many we can go. 

Write a function that takes a number n as a parameter and return an array containing n shades of grey in hexadecimal code (`#aaaaaa` for example). The array should be sorted in ascending order starting with `#010101`, `#020202`, etc. (using lower case letters).

```python
def shades_of_grey(n):
  return '''n shades of grey in an array'''
```

As a reminder, the grey color is composed by the same number of red, green and blue: `#010101`, `#aeaeae`, `#555555`, etc. Also, `#000000` and `#ffffff` are not accepted values.

When n is negative, just return an empty array.
If n is higher than 254, just return an array of 254 elements.

Have fun

Difficulty: EASY
Starter code: def shades_of_grey(n):
	

Solutions:
def shades_of_grey(n):
	if n > 254:
		n = 254
	return ['#%02x%02x%02x' % (i, i, i) for i in range(1, n + 1)]


def shades_of_grey(n):
	return ['#{0:02x}{0:02x}{0:02x}'.format(i + 1) for i in range(min(254, n))]


form = '#' + '{0:0>2}' * 3
shades_of_grey = lambda n: [form.format(hex(i)[2:]) for i in range(1, min(n + 1, 255))]


def shades_of_grey(n):
	return ['#' + hex(x)[2:].zfill(2) * 3 for x in range(1, min(n + 1, 255))]