Magic, White and Black by Franz Hartmann, 1890.  See The Young Wizard's Hexopedia.

You already know that "A yellow time always ends a green time" (Dusan Teodorovic & Milan Janic, Transportation Engineering).  This photograph may be used as a tool for accessing a yellow time.  From Worcester Polytechnic's 1967 yearbook.

Ireland as the threshold of the Otherworld, by Cornelius Weygandt, in The Sewanee Review, 1904.

You've heard of rose-colored glasses.  Here's the opposite.  However, the phrase "the world is already rose-colored" is a Googlwhack.  From Lustige Blätter, 1903.

"The miracle of light."  From Popular Mechanics, 1934.

Do you know the mysterious colors and strange melodies of serpent enchantment?  If you don't know, now you know.  From Whittier's Legends of New England.

"Key to the meanings of colours."  From Thought-Forms by Annie Besant and Charles Webster Leadbeater, 1905.

"The scientist points out that each color of starlight tells its own story."  From Popular Mechanics, 1933.

How nifty: the eras of history and characters of empires understood as colors of a rainbow.  From The Western Monthly Magazine and Literary Journal, 1836.

Here's a marvelous explanation of the Irish "seven devils" as speculative superstition refracted by a mental prism into differently colored devils across the nations of the earth.  From Holland-Tide or Irish Popular Tales by Gerald Griffin, 1927.  Favorite phrases: "If one were disposed to be fancifully metaphysical upon the subject ..." -- yes, one would be so disposed!  Ireland as a "step-daughter" island.  And the zinger: "But what has this to do with the story?  In order to answer that question, the story must be told."

The Blue: the Entered Apprentice, the Fellow Craft and the Master Mason, 1885.

"A nocturne in black," from Grip, 1891.

"The ghost: Well, it really is too much when the shade of a respectable nobleman is taken for a pink lizard."  From The Sketch, 1910.

He says he's not ready yet because "This wretched rouge has too much vermillion in it, and I can't make it harmonize with my eyes."  From The Sketch, 1893.

It isn't a blue monkey with a pink tail.  From The Harvard Lampoon, 1878.

Use your white crayon to color in "the ways of ghosts" from The Collected Works of Ambrose Bierce, Vol. 3, 1910.

"Red raven is."  From an ad in The Index, 1909.

An organ that plays color.  From Popular Mechanics, 1924.

Use your white crayon to color in "all the little sighing souls" from The Haunted Hour compiled by Margaret Widdemer, 1920.

Use your white crayon to color in "rank on rank of ghostly soldiers" from The Haunted Hour compiled by Margaret Widdemer, 1920.