Regina Henschel (bug 94774 comment 3): "The gradients in OOXML have multi-stops. Such cannot be represented with the draw:gradient elements, but can be represented without problems by the svg:linearGradient or svg:radialGradient elements. After this elements are implemented in LO, the gradients from OOXML can be translated to ODF nearly 1:1. Therefore I think OOXML filter depends on the implementation of the svg gradients. Currently multi-stop gradients in OOXML-files are rendered wrongly."