Created attachment 116752 [details]
In the attached VSDX file there are color filled boxes. In LibreOffice all boxes are black. In page1.xml I found that QuickStyleFillColor element has V strange attribute values (201, 202, 203, 204 etc.). Specification ( https://msdn.microsoft.com/en-us/library/hh661351%28v=office.12%29.aspx ) says that the value of the structure MUST be from the following table, i.e. 0-8, 100-106. These cases are handled in libvisio.
Created attachment 116753 [details]
LibreOffice 5.0 beta screenshot
Created attachment 116754 [details]
Visio 2013 screenshot