The difference between a sedge and a deadgrass is that the deadgrass shades contain no significant amount of red, while the sedge shades do have red. Coat and texture also play a factor in the perception of color. The self-color pattern is preferred by the standard (One color with or without lighter and darker shadings of the same color). You will see dogs with varying degrees of other markings such as: masking on top of the skull, striping effect of light & dark through the body and on legs, distinct & indistinct saddle markings, agouti coloring and tan points. All are acceptable, they are just not preferred. A white spot on the breast (not extending above the sternum), belly, toes or back of the feet is permissible, but the smaller the spot the better. White beyond these areas and black anywhere on the body is not allowed in the breed standard.
yes
yes