Want color but not a lot of pepper flavor? Grow purple beauty peppers. I found this photo with a recipe for stuffed peppers. Purple beauties are much smaller than most bell peppers. Think about stuffing mushroom caps to get an idea of how many you would need depending if they were a main dish or side dish. I think as a side dish you could use all kinds ingredients in stuffing for eye appeal.
Purple Bell Pepper, Nutrition Benefits, Calories When To Harvest What you don't know about "Black Beauty Bell Peppers", with PFWCES. http://durablehealth.net/food-nutrition/purple-bell-pepper-nutrition-benefits-calories-harvest/