Open file n819614.pptx from core/sd/qa/unit/data/. Save it as pptx. Open the saved file in PowerPoint, after repair (see bug 155412) the brownish rectangles are gray. I see the error in Version: 7.6.0.0.alpha1+ (X86_64) / LibreOffice Community Build ID: b3c88dc039d447322b8c8c564ab6e2f0ce9c5b90 CPU threads: 8; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win Locale: en-US (en_US); UI: en-US Calc: CL threaded Was OK in Version: 7.6.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: 4829a85d0753c93419bd46b1d50bcfa6f0f3f1da CPU threads: 8; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win Locale: en-US (en_US); UI: en-US Calc: threaded
The file n762695.pptx in core/sd/qa/unit/data/ has the similar problem.
And file n593612.pptx core/sd/qa/unit/data/ as well.
The wrong colors are generated because PowerPoint 'repairs' the files. After the fix in bug 155412 the colors are correct. Therefore I set this as duplicate to bug 155412. *** This bug has been marked as a duplicate of bug 155412 ***