They could very easily just keep the color for color seeing people, and then add a simple pattern in the background.
Like maybe diagonal lines on one, wavy horizontal lines in another, small dots in another, etc.
Just pretend you are taking a black and white picture or making a black and white copy on an old copy machine. Can you still interpret the data afterwards? If yes, then you did it right.
Exactly.
They could very easily just keep the color for color seeing people, and then add a simple pattern in the background.
Like maybe diagonal lines on one, wavy horizontal lines in another, small dots in another, etc.
Just pretend you are taking a black and white picture or making a black and white copy on an old copy machine. Can you still interpret the data afterwards? If yes, then you did it right.