One of the smaller cosmos around the perimeter of the vegetable garden is a dark purple. This is the only cosmos of this color to bloom this year! I think it looks great with the fallen leaves on the ground.
Another cosmos has decided to bloom, outside of the garden next to the original morning glories. The thinning remains of a red geranium adds a third flower color to this view. As the days grow shorter, the morning glories don't always develop fully, leaving pink ribs on the front of the flowers. They usually bleach out to a bright white if given enough light and warmth.
The glories that come out later in the day keep their pink ribs. If they open fully first thing in the day, they finish brightening to their full blue color, otherwise they stay this two-toned look!