The color of your eyes when scanned is determined by the pigmentation in your iris.
You don't need a machine, you need a computer program which will analyse the colour in any image - scanned or other file. However, not all scanners are accurate enough to properly interpret the colour of an original image. What is scanned in as one colour my appear in the resulting file as a rather different shade altogether. To know for certain what colour an image is you would need to compare the origianl to a pantone colour palette.
what colour are david attenboroughs eyes
They are the same colour colour as humans eyes!
her eyes are blue
His eyes are blue.
He has blue eyes
blue eyes
He has grey eyes.
The Iris.
she has blue eyes
Kangaroos have brown eyes.
she had large blue eyes.