You don't even need to use cammo anyway. Most animals see in black and white so a Hawaiian shirt would still look the same to them.
Not quite true mate. They see in black and white to a certain extent, though there are many shades of grey in between. If you wear colours the same as the surroundings then you blend into the same shades of grey, if you wear brght colours then you are a different shade of grey and in contrast to the surroundings. When all life is black and white then they recognise those shades of grey as we would colours.