Since Version ??? its possible for some Diagram-types to define the Fill-Color per
optional →context→edit→context→DataRanges→DataSeries→Fillcolor <cellrange with "colorValues">
IHMO the Colors defined in that way should also reflect into corresponding colors in Legend-symbols - but unfortunatly doesn't...
See attached Calc-doc with simple pie-Chart
Created attachment 113255 [details]
Calcfile with simple Pie-Chart
*** Bug 89256 has been marked as a duplicate of this bug. ***
Thank you for reporting the bug. Can you see if bug 80303 is similar to your problem so that I can mark your report as a duplicate of it? (Later bugs are generally marked as duplicates of earlier bugs).
Yes, its at last the same issue as here.
*** This bug has been marked as a duplicate of bug 80303 ***