Chapter 3, Problem 37E

Remove the following two statements from the draw method of Picture:

$\begin{array}{l}\text{window}\text{. changeColor }\left(\text{"bl ack"}\right)\text{;}\hfill \\ \text{sun}\text{. changeColor ("yel1ow");}\hfill \end{array}$

and make the color setting, instead, via a single call to an internal method called setColor (which you need to create).