Fix the "unreadable blue Booleans" problem in the 256-color Literate theme.

Author: nblumhardt

src/Serilog.Sinks.Console/Sinks/SystemConsole/Themes/AnsiConsoleThemes.cs

@@ -21,22 +21,22 @@ static class AnsiConsoleThemes
         public static AnsiConsoleTheme Literate { get; } = new AnsiConsoleTheme(
             new Dictionary<ConsoleThemeStyle, string>
             {
-                [ConsoleThemeStyle.Text] = "\x1b[37;1m",
-                [ConsoleThemeStyle.SecondaryText] = "\x1b[37m",
-                [ConsoleThemeStyle.TertiaryText] = "\x1b[30;1m",
-                [ConsoleThemeStyle.Invalid] = "\x1b[33;1m",
-                [ConsoleThemeStyle.Null] = "\x1b[34;1m",
-                [ConsoleThemeStyle.Name] = "\x1b[37m",
-                [ConsoleThemeStyle.String] = "\x1b[36;1m",
-                [ConsoleThemeStyle.Number] = "\x1b[35;1m",
-                [ConsoleThemeStyle.Boolean] = "\x1b[34;1m",
-                [ConsoleThemeStyle.Object] = "\x1b[32;1m",
-                [ConsoleThemeStyle.LevelVerbose] = "\x1b[37m",
-                [ConsoleThemeStyle.LevelDebug] = "\x1b[37m",
-                [ConsoleThemeStyle.LevelInformation] = "\x1b[37;1m",
-                [ConsoleThemeStyle.LevelWarning] = "\x1b[33;1m",
-                [ConsoleThemeStyle.LevelError] = "\x1b[37;1m\x1b[41;1m",
-                [ConsoleThemeStyle.LevelFatal] = "\x1b[37;1m\x1b[41;1m"
+                [ConsoleThemeStyle.Text] = "\x1b[38;5;0015m",
+                [ConsoleThemeStyle.SecondaryText] = "\x1b[38;5;0007m",
+                [ConsoleThemeStyle.TertiaryText] = "\x1b[38;5;0008m",
+                [ConsoleThemeStyle.Invalid] = "\x1b[38;5;0011m",
+                [ConsoleThemeStyle.Null] = "\x1b[38;5;0027m",
+                [ConsoleThemeStyle.Name] = "\x1b[38;5;0007m",
+                [ConsoleThemeStyle.String] = "\x1b[38;5;0045m",
+                [ConsoleThemeStyle.Number] = "\x1b[38;5;0200m",
+                [ConsoleThemeStyle.Boolean] = "\x1b[38;5;0027m",
+                [ConsoleThemeStyle.Object] = "\x1b[38;5;0085m",
+                [ConsoleThemeStyle.LevelVerbose] = "\x1b[38;5;0007m",
+                [ConsoleThemeStyle.LevelDebug] = "\x1b[38;5;0007m",
+                [ConsoleThemeStyle.LevelInformation] = "\x1b[38;5;0015m",
+                [ConsoleThemeStyle.LevelWarning] = "\x1b[38;5;0011m",
+                [ConsoleThemeStyle.LevelError] = "\x1b[38;5;0015m\x1b[48;5;0196m",
+                [ConsoleThemeStyle.LevelFatal] = "\x1b[38;5;0015m\x1b[48;5;0196m"
             });
 
         public static AnsiConsoleTheme Grayscale { get; } = new AnsiConsoleTheme(