I have to say I love bays as through sheer coincidence I have 3 and they would be so upset if they knew I would quite like to paint them dapple grey!!! Having said that I would only really want greys if I lived in a mud free country!!
Although mine are bay, dark brown and black, buckskin has to be my favourite by far and that's all thanks to this gorgeous stallion and his amazing but unusual colour!!!
I vote Chestnut, i've always thought they look super when they shimmer like a goldfish!
Then i'd say dark/brown, not bay, but brown. I have a brown gelding and at first i wasn't keen on the colour, i knew him before i bought him, and yet it grew on me the more i got to know him! He's a very plain one, no markings, but he has an advantage that he goes black in the summer!...... Right now though, he looks like a bar of Cadbury's lol