為什麼說 "光是好的"? also 花是好的,

黯然失色是壞的，light and color is inseparable.  Look at mirror see if
your face is in healthy color, see if your eyes are shining with joy.

音樂是好的，音樂無樂(趣)即使白天在也黑暗 (A English word)。
 

花是好的? 底層xxxxx?的花卻是被踐踏的. Stick on the floor you will never fly.
 Flower is at the top, is at the end.
So wait but can not wait too long, stand high but do not disconnect with
soil, as well as light.
 

All above words share a common trait, what is that ?