Irish Beer tartan

[OC Richard]

Better colours for a beer tartan would be yellow/gold for the malted barley, green for hops, blue for the water, brown for the yeast.

Amen!

Or perhaps extremely dark brown for Guinness, beige for the head, amber for ales and red-brown for reds. (Not enough contrasts, probably.)

Just an aside, as a piper and a Guinness lover, I want bagpipes like this.