And lo! In the dark east, expanded high, the rainbow brightens to the setting sun.

Dark Side of the Rainbow

The awesome antiphon swelled in the dark and expanded.

Just take a garden hose with your back to the sun and spray. You'll make a rainbow.

“Life is like a rainbow, You need both the sun and the rain for colors to appear through dark clouds.” ~ Tom Baker

Let every dawn be to you as the beginning of life, and every setting sun be to you as its close.