顔色がいい have a good color●have a healthy color●look well

顔色がいいね Your color is good.

顔色がさえない look blue [green, pale]●look green [blue, pale, white, yellow, fishy] about [around] the gills

顔色が悪い have a bad complexion●have a poor complexion●look blue [green, pale]●look green [blue, pale, white, yellow, fishy] about [around] the gills●look like death warmed over●look sick●not look oneself●not look well●off color 【形】off-color〈英〉●peelie-wally

顔色が悪いね Your coloring is bad.

顔色が悪いよ You look pale.

顔色が悪くて〔体調不良のため〕 green around the gills

顔色が悪くて病人のように見える look like death warmed up〈俗・軽蔑的〉

顔色が悪くなる lose one's roses

顔色が若々しい have a youthful complexion

顔色が青ざめる turn ghastly pale

顔色が青白い green and pale 【形】pasty

顔色が赤い have a high color●have a high complexion