Because the definition is self contradictory. It can't be invisible and have color at the same time. Color is merely reflected light at certain wavelengths. If it's invisible it's not reflecting light, and therefore has no color.§outh§tar said:Since they are invisible how would you know?
What are you talking about? I happen to be an atheist.And before you answer, remember the arguments of atheists who say God can't be proved.