Change default colors for console target to highligt errors in red

[snakefoot]

These are the colors used by NLog ColoredConsole:

            new ConsoleRowHighlightingRule("level == LogLevel.Fatal", ConsoleOutputColor.Red, ConsoleOutputColor.NoChange),
            new ConsoleRowHighlightingRule("level == LogLevel.Error", ConsoleOutputColor.Yellow, ConsoleOutputColor.NoChange),
            new ConsoleRowHighlightingRule("level == LogLevel.Warn", ConsoleOutputColor.Magenta, ConsoleOutputColor.NoChange),

The standard is usually red-for-error and yellow-for-warning. NLog should follow the standard, and just use Red-color for both Fatal and Error and yellow-color for Warn (Not Magenta)

[welcome]

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