Vexillatious Natives

To Keswick this morning, which was crawling with tourists, and the slow-motion comedy of finding a parking space at Booths. On the way home I stopped at a filling station on the edge of town and found - to my great delight - that they sell the Cumbrian flag bumper-stickers previously mentioned in this blog. My back bumper is now adorned by a white cross on a blue ground, the word 'Cumbria' within. Heaven knows what the College of Heralds would make of this - frankly, I'm not much bothered by their opinion. A question still remains - who dreamt up this piece of vexillagraphic fantasy? Does the white and blue mean anything? Answers in the Comments please. And if you want to get one yourself, just drive down to High Hill Garage, Crosthwaite Road, Keswick.