背景色を変更します

Black	Gray	Blue	Red	Magenta
Green	Yellow	Cyan	White	Pink
Gold	Tomato	Orange	Silver	Purple
SlateBlue	Lavender	Navy	Fuchsia	DarkGray
Firebrick	Teal	Lime	MidnightBlue	RoyalBlue
SteelBlue	Turquoise	Aquamarine	Hotpink	Olive