I have a theory.
After finding the original color of the house when we pulled the junky porch off (a color which is oddly similar to the current color of the house, only a bit lavender)
And after discovering that the fancy trim on the house was teal at one time, which inspired me to paint it that color again (which in turn caused one of my friends to refer to it disparagingly as "Miami Vice Blue")
And after finding that the fascia boards and corner trim were painted a pale orangey-yellow at one time (which, honestly, a part of me wants to do again if I thought that the Historic Preservation Commission might ever allow it)
I came up with the theory that the house was originally painted in colors to match the panes of stained glass in the front windows.
(Old photo; the curtains are different now.)
So today I decided to repaint the window sashes dark blue (Valspar Royal Navy) instead of black, to go with the blue in the windows.
Not as dramatic a difference as I had hoped. (The one on the right is navy; the one on the left is black.) But then again, I don't want folks driving onto the sidewalk because they're gawking at my house and saying, "Oh my stars, she painted the window sashes blue!" It really does show up better in person than in a photo, and I imagine it'll look even better on a sunny day rather than an overcast one like today.
Special thanks to Mayfair Mistress of Queen Anne's Revenge, who first gave me the idea to paint the sashes dark blue.