In a blender, combine the vinegar, sugar and mustards; cover and process until smooth. While processing, gradually add oil in a steady stream. , Place salmon, skin side down, in a greased 8-in. square baking dish. Sprinkle with thyme, salt and pepper., Spread mustard mixture over fillets; gently press bread crumbs on top. Bake, uncovered, at 375° for 20-25 minutes or until fish flakes easily with a fork.