Do you like this color? An app

Do you know which colors you like? Are you sure? Wouldn't it be good to have some data?

All that's needed is a simple app. Running on your phone (or other computer, or device) the app would at regular intervals prompt you with random colors, asking you to rate them (potentially a simple 1-100 scale, or potentially a more complex scale of the emotions elicited). Over time, a full dataset of preferences is built up, with a pattern likely to emerge pointing you to your favourite color (or favorite color for a particular emotion).