Water kefir grains colour – how it impacts the flavour Published 25 September, 2014 at 640 × 640 in Water kefir grains colour – how it impacts the flavour Water kefir grains can vary greatly in colour from a clear whitish colour to a deep honey. It all depends on what you re feeding them. Water kefir grains can vary greatly in colour from a clear whitish colour to a deep honey. It all depends on what you re feeding them.