Add in the green peppers and onions. Stir, and then add 1 cup water, the ketchup, and garlic. Stir it to combine, and then add the brown sugra, chili powder, dry mustard, red pepper flakes, and hot sauce, Worcestershir, salt and pepper to taste. Stir to combine, then cover and simmer over medium-low heat, about 20 minutes.