The 1st of 7 wallpapers that involves a space background: Each are color coded.
Ponies:Twilight Sparkle, Rainbow Dash, Rarity, Fluttershy, Applejack, & Pinkie Pie.
Reason: Blue is my favorite primary color. Just as MLP:FiM is my favorite cartoon.
@ Obsidian Dawn
MLP:FiM belongs to