Apps for everything but would I need this one?

Yesterday, I came across a posting of someone who was developing an app for an I device. It is one that converts colour into sound. It made me think. Would I use such a thing. I do sometimes associate colour with sound but it is a personal association. I think of dark colours as the bass notes on a piano or cello or tuba. I think of bright colours like the sound of a trumpet or flute or piccolo. I think of light colours as a ringing of a clear high bell. So I might not like it if someone else picked the sounds for the colours. I'd just rather hear the word. What that colour is. Very interesting concept though.