"The first Sunday of a new month is upon us again, and it is time for Flash 55. The rules of this prompt have not changed: Write a piece of poetry or prose on a subject of your choice in precisely 55 WORDS."
. . .
"The optional extra for this challenge is to add a single colour to your poem."
He rode into Amarillo
A callow fellow
Discolored by desert dust
Determined that he must
Challenge the hottest local gun
But he was not the one who won
Losing in this way was no disgrace
And despite the pale dust cover on the face
Of this lead loaded dying caballero
They saw he wasn’t yellow
[I have no idea where this came from]