I'm a huge fan of the pink wax begonias, ageratum and dusty miller combination, too. Do you do the pink wax begonias with the green foliage or the bronze ? I tend to like the bronze ones just for the color contrast, but either one works fine for me.
And yes, blending colors of the same annuals is another preference, whether they're pastels or hot colors.
I used to do the color blending thing with annuals a lot...until I got carried away with roses and daylilies. Then I had this "conflict of interest" thing going on depending on the season and what was blooming at the same time and finding annuals to compliment all of that started to make me nuts ! lol
Red, yellow, and orange zinnias in summer is still my all time favorite. I tend to gravitate toward bold colors.
