If the gifts are deductible, the actual cost of the donation is reduced by your tax savings. For example, if you are in the 33% tax bracket, the actual cost of a $100 donation is only $67 ($100 less the $33 tax savings). As your income tax bracket increases, the real cost of your charitable gift decreases, making contributions more attractive for those in higher brackets.
Small particles of dust and pollution in the air can contribute to (and sometimes even enhance) these colors, but the primary cause of a blue sky and orange/red sunsets or sunrises is scattering by the gas molecules that make up our atmosphere.
The colors orange, red, blue and purple both separately and in natures unique majestic sequence twice a day inspires joy. Walking in the moonlight is another color experience where the world seems to slow down. Walk through a lush green forest forest and feel the effect of the color green. As you breathe its essence it fills your soul, increases your connection with love, truth ,hope, new life and the opening to wonder.