The traditional color associated with a 30th wedding anniversary is green. A 22nd wedding anniversary is also associated with green, and other anniversaries use different hues of green, such as jade and emerald.
Decorations for 30th-anniversary parties may reflect the theme color, or use green in some other decorative capacity. Gifts may be green in color, but anniversary gifts adhere to separate traditional terms. The gift theme for 30th anniversaries is traditionally pearl, but some modern celebrations use diamonds as the primary gift attribute. Hallmark suggests a dinner of oysters for couples on a budget, and a vacation to a place with native oysters for loose budgets. When buying for another couple celebrating a 30th anniversary, mother-of-pearl items are appropriate.