In the original "Wizard of Oz" book & in the musical "Wicked", the slippers aren't "ruby" but this metallic color
[DOC] [TLE] Silver Shoes | Oz Wiki | Fandom powered by Wikia [PAR] Silver Shoes With Pointed Toes* In the end of Baum's original story, Glinda the ... 
in L. Frank Baum's first Oz book titled The Wonderful Wizard of Oz, published in 
1900.