OK so I have been doing some experimenting. Here are pictures of the results:

a - Rinsed in cold water immediately using no detergent
b - Rinsed in cold water immediately using fabric softener as detergent
c - Rinsed in hot water immediately using no detergent
d - Rinsed in hot water immediately using fabric softener as detergent
e - Photoshopped first to add saturation of 50 then rinsed immediately in cold water using fabric softener as detergent
f - Rinsed in cold water after 20 minutes using fabric softener as detergent (in my opinion, this was the best result)
g - Photoshopped first to add saturation of 30 then rinsed after 20 minutes in cold water using fabric softener as detergent
h - Photoshopped first to add brightness of 30 and contrast of 30 then rinsed after 20 minutes in cold water using fabric softener as detergent
i - Photoshopped first to add brightness of 50 and contrast of 50 then rinsed after 20 minutes in cold water using fabric softener as detergent (I like the look of this one)
j - Rinsed in cold water after 30 minutes using fabric softener as detergent
k - Rinsed in cold water after 1 hour using fabric softener as detergent
l - Rinsed in cold water after 2 hours using fabric softener as detergent
m - Photograph printed on fabric but not rinsed (true picture colour)
The next picture shows a close up of a picture print gone wrong but I wanted to show what I did with the same photos. If you look at the print on the right (with the same two photos together), the photo to the very right I photoshopped by changing the colour balance by 50 to blue. It gives a truer colour to the original. I'm sure if this were tweaked right, would give the true colour to the picture on the left.
For some reason, the blue in each case, seems to rinse out more than any other colour.
Here are some other pictures I did using a slightly different recipe. This recipe was (by weight):
85% water
10% alum powder
4% washing soda
1% fabric softener
I thought a fabric label would be cool:
