I have checked that every Template is set to my dark themed template, yet still the page opened after clicking on the search magnifying glass is displayed with a white background. This is a quibble. I can live with it.
The restriction of not allowing “.” (period) in folder names is slightly more annoying, but I have found a workaround that I can live with.
One last problem I found: My backlight site contains only one album set right now. Inside that album set are several albums, each containing more than one photo. The cover photo for the album set is supposed to be a random photo, presumably taken from one of the albums in the set. But, what shows on the album set is a blank/empty image icon. Shouldn’t one of the photos from within the album set be displayed on the icon of that album set?
I thought you were referring to the actual search page, not the quick search. I don’t think you can change the styling for that page.
One option is to disable the quick search icon and just use the built in search page, just add a link to it in your navigation menu.