Blues and purples are created by lighter gases such as hydrogen and helium, while low-level nitrogen can add red fringes to the bottoms of green auroral curtains.
蓝色和紫色是来自较轻的气体比如氢和氦，而更低点的氮气能在绿色极光的底部添上红色的边缘。
2
This disconnect began with the dark color palette of blacks and browns or forest green and deep blues that opened the show.
这种脱节开始与黑人黑暗的调色板和褐色或绿色森林和深蓝色，打开显示。
3
Cold colors, such as icy blues and green, have a calming effect.