Lord, make me an instrument of your peace, 
where there is hatred, let me sow the love;
where there is injury, pardon;
where there is doubt, sow the seed of faith;
where there is despair, a light of hope;
where there is darkness, dawn the light a wisdom;
where there is sadness, make them cheer with joy.

Dear ones
One of the biggest challenge for the humanity is their own brain. That brain makes all the difference, by increasing egoism, selfishness, and materialistic aspect, for which one goes beyond the limits to acquire them. The debate is not for the existence of the god, but to treat each and every life humanly. Jesus has been crucified by the fear of he becoming the king during those periods. What ever those did to him he took it happily, to show to the world that people of virtue and truth are always treated like that on this earth.
Presently most of the people wanted short cuts to enjoy life by acquiring materials by whatever be the means. But actual happiness is here if we try to realize that happiness is within us, by controlling the brain. All other methods are for that only, like prayers, with idol or without idols. There is no race which is superior or there is any religion that is superior. Only the one which speaks Humanism and makes to people behave humanly is the greatest one.

If it is for argument sake, what we are seeing is actually is not true, whatever colours we see only the colours less the actual colour. Then how we can say what we are seeing is true. We see some wave lengths of light and not all, but we can observe the effects of those non visible wavelengths of light. But they are more powerful than the visible light. As they can dis-assemble any thing that comes on their by exciting them, with certain intensities. It is the same case with sounds in the region shock waves.
The same wave lengths also can reverse if they are in different frequency modes. These are fundamentals of truth on this world, which makes the energy to assemble and behave differently and distinguishably than others.
We feel excited for some sounds, and they linger in our ears or brain for a long period, it is the same case with colours especially the rainbow. For your kind information most of holistic treatments are using some these techniques.