Trying to get that balance of color is something I am always trying to do. I have figured out which plants I need to carry color from spring to fall. But how much to plant together is something that is a lot harder to do. I want color every where. But when does it become busy instead of just colorful. For effective gardening they say mass plantings are good. But I think you need a big yard to carry off mass plantings. I have purple dome aster which is wonderful but has very dominant coloring. If I have it only in one spot. The color just screams at you and your eye doesn't travel the way it should. If I place in too many spots then you don't appreciate it as much. You get that feeling of just more of the same. But how do you find as strong a purple this time of year to balance the color. Would love to hear from you. Chris from Braintree, MA Zone 5