[Qgis-user] Using data defined attributes to colour a shapefile gives an all black legend

[Damien Stephens]

HI guys.
I have stored the colour information for polygons in three columns in a shapefile (Red,Green and Blue).
I then used the data defined attributes in the  symbol dialogue box to set the colours:
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This works a charm except that my legend for the layer now has all of the colours as black, which kind of defeats the purpose of colourising the map in the first place.

Any ideas for a workaround to get the actual colours into the legend?
I am sure it is something simple that I am missing.
Thanks
Damien
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