PSA: Colour output should be clipped if using the pretrained model for generating datasets
Something I didn't think to check for a while, but the model actually leaves a lot of residual data in off-white colours that aren't visible to the human eye, but which will be picked up on by other ML algorithms.

![image](https://user-images.githubusercontent.com/31524061/52205738-fa758f00-286f-11e9-912f-60125e1baf06.png)

In this example, if you adjust the levels, there is actually more data encoded about his hairline than is first apparent:

![image](https://user-images.githubusercontent.com/31524061/52205777-24c74c80-2870-11e9-8a71-1b9c139bc919.png)
