Pepper-rubbed rib eye with grilled tomato salsa

Ingredients

• 4 tsp coarsely ground black peppercorns
• 1/2 tsp dry mustard
• 1/2 tsp cayenne pepper
• 2 tbsp olive or vegetable oil
• 4 rib eye or New York strip steaks , at least 1-in. thick
• 6 vine-ripened tomatoes , preferably 3 plum and 3 yellow
• 2 tbsp olive oil
• 1/3 cup red onion , very finely chopped
• 4 tsp red wine vinegar
• 2 tbsp finely chopped parsley , or coriander
• 1 tsp finely chopped fresh oregano , or rosemary, or 1/4 tsp dry oregano or rosemary leaves
• 1/2 tsp salt
• 1/2 tsp freshly ground black pepper
• 1/4 to 1/2 tsp granulated sugar