android lollipop notification background colour

Question

Is it possible to change the background colour of notifications in android lollipop.

I noticed that some notifications are white, some light grey and some are dark gr

Answer 1

That background is set by the material design itself, it is supposed to be white, for design matters.

Take a look here!

Or you could make a custom layout.

Answer 2

you are talking about android programing or just for you phone? if for programing, you are just can use a custom layout for your notif, here is an example,

and you can look here too

good luck.