As we all know, the prismatic cupcake helmet changes color to suit the personal color of the knight wearing it.
Therefore, the icing chemically contains every color of the rainbow.
A Cupcake. That contains every color of the rainbow.
A Cupcake. That contains rainbows.
A Cupcake. Rainbows.
Any Brony that reads this should be able to make the connection...
Nobody wants your grimdark fanfics.
Get out.
STAY OUT OF MY SHED