@Ted - Braille is alive and well. Not everyone likes or can afford computers. Paper and stylus are a lot cheaper than a 500 dollar (usually more) print reader.
My son is visually impaired, and not a braille reader, but I can see the value of this, however, a lot of blind kids are tactilely defensive (My son certainly is. He is supposed to touch everything, but he hates it. Poor kid.) so as long as it chimes and doesn't buzz, I can see the benefit.
Also, colors are a good idea, because kids with low vision can often identify contrast, like black and yellow or black and white.
Also, colors are a good idea, because kids with low vision can often identify contrast, like black and yellow or black and white.