MCM white speckled vase with modernist abstract pattern, Japan ca 1960-1970s

How can an item be both a neutral and an artful abstract? White speckled vase with a minimalist abstract pattern in blue, green, black and yellow to one side only, marked JAPAN on the bottom. In good condition with marks of age and use, mostly on the inside. Size: 10 inches tall (25.5 cm)