The agouti gene would control where the pigments are disposited, the dilution one would transform black to blue (not black to red/liver) ; so here what we see is different, it's the red/liver from bb.
For Saarloos pictures, here are the brown Saarloos I have in the DB
SWD Forest-Brown, click on the dog name, then on the next page on "Pictures of this dog", you will see picture of the dog if any found (bad request msg otherwise).