Use a color for about command embed

Author: kyb3r

cogs/utility.py

@@ -167,7 +167,7 @@ async def changelog(self, ctx):
     @trigger_typing
     async def about(self, ctx):
         """Shows information about the bot."""
-        em = discord.Embed(color=0x36393F, timestamp=datetime.datetime.utcnow())
+        em = discord.Embed(color=discord.Color.blurple(), timestamp=datetime.datetime.utcnow())
         em.set_author(name='Modmail - About', icon_url=self.bot.user.avatar_url)
         em.set_thumbnail(url=self.bot.user.avatar_url)