Going to tools -> options -> appearance, and unticking all colours / options, does not remove the grey lines indicating page margins in LibreOffice Draw. Being able to hide margins is important for design, preview, and screenshot purposes.
Page margins are set from the Tools -> Options -> Appearance: General "Text boundaries" value. If you set that the same color as the "Document background" the margins will disappear. Color can also be adjusted from Expert Configuration--but uses the internal color index reference not a direct color name or hex value, so a bit cumbersome. Additionally you can toggle the DocBoundaries IsVisble boolean on and off from Expert Configuration: /org.openoffice.Office.UI/ColorScheme/ColorSchemes/org.openoffice.Office.UI:ColorScheme["LibreOffice"]/DocBoundaries IsVisible but the IsVisible property is not being honored in Draw--that is an issue, adjusting summary to that.
Thanks for the quick and in-depth reply!
Actually this isn't limited to expert configuration, one can toggle the visibility of things directly in Tools > Options > Libreoffice > Application Colours (formerly Appearance), it's maybe slightly unintuitive to see that it's the left-most checkbox associated with (some) colour list entries . Unchecking it turns displaying of the given item off. That doesn't however change the fact that this setting isn't honoured for Impress and Draw. Anyway, it's very easy to fix
Katarina Behrens committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=5f15c7866ef03d7cbbd967e341651fa0c7b64bcd tdf#89420: Honour doc boundaries (in)visible also in Impress/Draw It will be available in 5.2.0. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Thanks very much Katarina!