blue, green, red Coloured chicks how do people do this, is it safe!

[Rath]

How are people getting chicks to turn funky colours when they are young like blues,greens reds etc, do they put food colouring or food dye in there water, i want to know if its safe for little chookies cause it would be a great treat for people to see at Easter time as its not far away.
Im assuming it would work better on white chicks any comments or anyone done this!

 

[dragon86]

ive done it once but it involves injecting dye into a half developed eggs and is illegal to do in some places. i no in my area i can do it as long as i dont sell, trade or give them a way. as far as safe goes i got 2 of 6 eggs to hatch but i also didnt seem to have a very good hatch over all from the group i had in there at the time. the dye comes out as they get there feathers. i have heard there might be a few other ways to do it but again they might be illegal in most areas.