The color of the sign changes depending on the cardinal point. White color is good if the sign is placed east or west and bad if is placed in south or north.
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Environment
OS :
Windows 8.1
Java version :
Java version "1.8.0_31"
Java(TM) SE Runtime Environment (build 1.8.0_31-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.31-b07, mixed mode)
Thank you for your report.
However, your ticket has been resolved as a duplicate.
This issue has been linked to the original bugreport: MC-33304. You can find or add further information on that report.
Please search before reporting any bugs, as it's likely that one exists already.