Solid: 
or
Sable: Red Sable in the Clear or Minimal pattern with tipping only, not solid shading. If all else is equal, a clear dog is preferred over one with tipping.
Brindle:

with

striping.
Tan: 
with

or brindle markings in the traditional pattern. Minimal creeping tan is also accepted, may include a tan snout and/or fully tan ears, and the tan under the tail may include up to half the tail (underside only, starting at the root).
May have

tipped with

markings on backs of legs/butt, underside of tail, front of chest, behind ears, muzzle and/or around eyes. Markings may be present in one, some or all of these areas. Optional -

shading on back
Masking: All of them above may be masked with

(standard mask).
White Markings: Always has

in the irish spotting (relaxed) pattern. On the hind legs, white is allowed up to and including the lower half of knees, or as a stripe of white on the front of the knees.