背景色変更
black
navy
gold
darkolivegreen
maroon
indigo
dimgray
mediumblue
yellow
olivedrab
darkred
darkviolet
darkgray
royalblue
khaki
green
crimson
darkorchid
silver
cornflowerblue
lemonchiffon
mediumseagreen
lightcoral
mediumorchid
lightgrey
skyblue
lightyellow
mediumaquamarine
mistyrose
plum
white
lightcyan
ivory
azure
lavenderblush
lavender