Sure, they are actually plated in gold, but its only a metaphor.
And it has nothing to do my desperate desire to be a princess. This is pure slander! No, I will accept the responsibility humbly, as Im clearly the cleverest, the most capable, and the most fair minded of all ponies! Of course, I will wear a crown, but only as a symbol of my burden. It will be heavy. Heavy with justice, and gold, and responsibility. But mostly gold. And diamonds. And it will be shiny. Shiny with fairness, and equality! Yes, it will be a great inconvenience and discomfort, but thus is my destiny!
Maaaaybe