Divide array based on inner array conditions

I have an array like :

let colors=[ [ 31236780195925 ],[],[],[],[],[ 31236780163157 ],[],[],[ 31236780228693 ],[],[],[],[],[] ]

inner array values can differ, I want result like in the following structure

let Red=[[ 31236780195925 ],[],[],[],[]];
let Green=[[ 31236780163157 ],[],[]];
let Blue=[[ 31236780228693 ],[],[],[],[],[]];