Color is not claimed as a feature of the mark.
The mark consists of A Black square shaped box turned on an apex with a negative (white) "S" located to the left of the left lower side and on the right end of the right lower side (angles), both "S" of which, lower part of "S" disappears off the outer edge of each, of the two sides of the box. The letters S followed by a, n,i,s,t,e,e,l appearing on an angle directly below the right lower (angled) edge of the black square box.