You're lucky - feels like I see as many white (and 'brown' form) Diamond Doves as normal ones recently! I'm no big fan of cultivated colour morphs - they're rarely more attractive than the original.
(and in the case of white forms they take away the colour markings so you can't tell what you're looking at! )
EDIT: Had a quick Google and been reminded that white Diamond Doves usually still have the red/orange eye-ring, so I will bow to democracy!