I can’t take much credit for the color scheme, as most of it was already here, but I did add the allium and the dark blue irises last year. Our front door is yellow, so it works really well with the purples & pinks (yellow being complementary/near complementary of both). Someday I’d love to have some poppies — they’re not purple, but I just love their color and paper-like petals. Marigolds are really cute and, strangely enough, I actually love the smell of them; spicy, but distinct! You can probably do a lot of plants that wouldn’t survive in the Northeast like cacti, which are a strictly indoor plant up here.