A ggplot2 theme built from a Java AWT applet: a gray window background, a
gray frame, a white panel, red, blue, purple, and gray marks, and a blue
Verdana title.
Usage
theme_javaapplet(
base_size = 15,
base_family = register_font("Arial", "Arial.ttf", "Arial Bold.ttf"),
title_family = register_font("Verdana", "Verdana Bold.ttf")
)