ワードプレスの記事内にソースコードを載せるときに読みやすくするためのプラグイン「Crayon Syntax Highlighter」を導入してみました。
オプションで選択できるテーマがたくさんあったので、今後の参考のために比較一覧をメモしておきました。
2016年4月現在で56種類ありました。

1c-kod

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

1c-zapros

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

809finest

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Ado

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Amity

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Arduino Ide

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Bncplusplus

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Capacitacionti

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Cg Cookie

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Cisco Router

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Classic

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Coda Special Board

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Dark Terminal

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Eclipse

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Epicgeeks

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Familiar

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Feeldesign

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Flatui Light

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Github

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Idle

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Inlellij Idea

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Iris Vfx

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Kaderu

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Kayote

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Light Abite

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Mirc Dark

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');http://depoton.com/wp-admin/post.php?post=71&action=edit#
	}
}

Mm Dark Blue

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Monokai

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Neon

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Obsidian

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Obsidian Light

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

OnderKa15

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Orange Code

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Powershell

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Powershell Ise

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Prism Like

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Pspad

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Qtcreator

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Raygun

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Secrets Of Rock

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Shell Default

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Solarized Dark

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Solarized Light

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Son Of Obsidian

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Ssms2012

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Sublime Text

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Terminal

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Tomorrow

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Tomorrow Night

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Turnwall

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Twilight

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Visual Assist

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Vs2012

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Vs2012 Black

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

X3info

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}

Xcode

// A sample class
class Human {
	private int age = 0;
	public void birthday() {
		age++;
		print('Happy Birthday!');
	}
}