/** Alternate table row background color, keeping in mind for the embedded rows we want to leave alone **/
/** If we do not want alternate color rows simply comment them. 
    Also, this customization would work with alternate material color scheme as changes require scss processing.
**/
/** 1st (2nd embedded), 5th (6th embedded), 9th (10th embedded), 13th rows ... **/
tr[mat-row]:not(.embedded-detail-row):nth-child(4n+1) {
    background-color: aliceblue;
}
/** 3rd (4th embedded), 7th (8th embedded), 11th, 15th ...  **/
tr[mat-row]:not(.embedded-detail-row) {
    background-color: beige;
}