Their eye color, by the actual data.

Take a 30-second quiz — your eye color, your partner's, optionally grandparents — and we'll generate a framed print of the real probability distribution for your baby's eye color, based on the modern multi-gene model. The 1907 Punnett square that taught everyone "brown is dominant" is wrong; this is what the data actually shows.
Pick your eye colors. The chart updates live; the print uses these exact values.
Custom flow: customer takes the eye-color quiz → we compute probability vector → render personalized print → submit to Printful API. Requires PRINTFUL_API_KEY.