动漫的夜晚概念在普通模型中的表现不佳，要么灯火通明要么单纯发黑，然而常用的画法中昏暗是用暗蓝色来表现的。
此模型在影响色调的同时能尽量抹除光源，用以生成正确的黑夜。加上night即可。
The concept of anime night is poorly represented in ordinary models, either too bright or simply black. However, in commonly used drawing methods, dimness is represented by dark blue.
This model can eliminate light sources as much as possible while affecting the tone of the image to generate a correct night scene.just "night".