Looks at the color information in each channel and darkens the base color to reflect the blend color by decreasing the brightness.
查看每个通道中的颜色信息，并通过减小亮度使基色变暗以反映混合色。
2
You can also change brightness proportionally by multiplying each color channel by a value greater than 1 to increase brightness and a value less than 1 to reduce brightness.
你也可以按照比例给每一个通道乘以一个数，大于1的数增加亮度，小于1的数减少亮度。
3
Looks at the color information in each channel and subtracts either the blend color from the base color or the base color from the blend color, depending on which has the greater brightness value.