Ms Barratt said she wanted the colours to showcase special and unique things about Guernsey.
She said: “A lot of tartans associated with places, the colours are significant to the place, so the Jersey one is a really lovely tartan, it’s got a golden colour for the sand and things like that in it.
“I thought I could do that, Guernsey’s got the lovely scenery, but I thought that is just like another island, what makes Guernsey Guernsey? So I literally wrote down a list of everything that I could think of that was Guernsey.”
Ms Barratt said the orange/brown colour represented the Guernsey cow, grey for the Guernsey donkey, blue for the fisherman’s Guernsey, green for sport, pink for the Guernsey lily and the white, red and yellow for the flag.