why do grass plants lose their colour ?

[asquiths]

Why does grass lose it`s colour ?

Also Why do grass plants look red,orange etc during drought,stress etc

Is the different colours other pigments ?

thank you

[Linn]

It has to do with the production
of chlorophyll which gives the green color,
when production of chlorophyll slows down
or stops due to drought or the approach
of winter, The production of chlorophyll
stops and reveals the other color pigments that were there all along!!

[asquiths]

thank you for the info