Hi, the "color" of quarks gives rise to the strong-force. I've read on some page (cannot remember where) that same-color repels and different color attracts. Additionally it was stated that the attractive force between color/anti-color is stronger than color/different color. But no ratios or any details were given. Is there such clear ratio between the two ? Also if a pair of quark/anti-quark is created will they always be anti-colored (e.g. a green quark and an anti-green anti-quark) ?