Color is not claimed as a feature of the mark.
The logo design consists of the "halo" that surrounds the top of the wording is in blue. The front part of the halo is thicker than the back portion, thereby giving it a 3-D effect. The word "HALO" that is surrounded by the halo is in shadow capital letters in black type. The words "WATER SYSTEMS" that appear below the word HALO is in a smaller font and in black type.