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Change Background Color

in 3.7 pre-rel
Change Background Color (CmdChangeBackgroundColor, command palette) opens a color picker to change the background color for the current file or for all files of the same type. From 2026-04-11 it has swatches for saved custom colors (CustomColors). New settings EBookUI.WindowBgCol, ComicBookUI.WindowBgCol and ImageUI.WindowBgCol (and FixedPageUI.WindowBgCol for PDFs) set the window background around ebooks, comic books, images and PDFs. All background color settings accept checkered for a transparency checkerboard.
The Change Background Color window with custom color swatches, over a document with a light green background

External viewers as toolbar buttons

The ToolbarText option for ExternalViewers adds a toolbar button that opens the document in that external viewer (#5313).
Toolbar with Acrobat and Notepad buttons added by ExternalViewers entries with ToolbarText

WOFF fonts and more print copies

Documents that embed WOFF fonts display correctly (#944). -print-settings allows up to 9999 copies (#5509).