So I have read that the 4th Horseman of the Apocalypse is
a PALE horse, as in the old saying 'death rides a pale horse"
So I looked the word up in a Strongs concordance.
As John who wrote the Apoalypse or Book of Revalations as we know it today was writig in Greek, I found the Translation of the word PALE from English to Greek,it is Strong's Greek CHLOROS (#5515).Green,Greenish,Pale.
This is the color of the 4th horseman who brings death upon one fourth of the World or Earth, I will have to look it up to make that distinction between .
And a fourth of the waters are made bitter and many die, I'm studying out loud and not preaching so do your own research!