He took a number of photostats out of a large red expansion envelope he had been hiding conspicuously beneath a leather flight jacket painted garishly with pictures of airplanes flying through orange bursts of flak and with orderly rows of little bombs signifying fifty-five combat missions flown.
The planes were decorated with flamboyant squadron emblems illustrating such laudable ideals as Courage, Might, Justice, Truth, Liberty, Love, Honor and Patriotism that were painted out at once by Milo’s mechanics with a double coat of flat white and replaced in garish purple with the stenciled name M & M ENTERPRISES, FINE FRUITS AND PRODUCE.
The girls disrobed at once, pausing in different stages to point proudly to their garish underthings and bantering all the while with the gaunt and dissipated old man with the shabby long white hair and slovenly white unbuttoned shirt who sat cackling lasciviously in a musty blue armchair almost in the exact center of the room and bade Nately and his companions welcome with a mirthful and sardonic formality.
There are no more uses of "garish" in the book.
Show samples from other sources
Outwardly, Annie showed no signs of garish ambition, but Mae was sure that there was something within Annie that insisted upon this, that she would have been here, in this position, no matter where she’d come from.
Dave Eggers -- The Circle
We did, and he swept the light over Martin’s body, a landscape of garish ruin.
Ransom Riggs -- Miss Peregrine’s Home for Peculiar Children