So far I have tried to override html, body and .user-menu .user-options (just trying to get the orange background colour to change first, then will worry about menu/section heading colours and our logo etc).
The CSS file is referenced in the mobilecss field mentioned on the wiki page, but when I tap the Force CSS Sync Now button on the app, the colours aren't changing. It would also be nice if a box popped up saying 'styles successfully sync'd' so I know it's actually done it (even if it's ignoring what's in the file).
I suspect it isn't refreshing though, as when I tap the button for long enough it offers to Copy the item (why the hell would I want to copy a button Apple? unless it doesn't think it's a button) and the Task queue pane on the Synchronization page stays on 'No tasks to be synchronized' with no mention of the fact I tried to request a CSS renew. Should I be logging this as a bug in the tracker?
This is on the 'live' iOS version of the app from App Store.
(Edits for grammar and extra information)