- Added support for setting the terminal foreground color.

- Some improvements to error handling.

src/main/java/net/rubygrapefruit/platform/Terminal.java

@@ -1,20 +1,32 @@
 package net.rubygrapefruit.platform;
 
 public interface Terminal {
+    enum Color {
+        Black, Red, Green, Yellow, Blue, Magenta, Cyan, White
+    }
+
+    /**
+     * Returns the size of the terminal.
+     */
     TerminalSize getTerminalSize();
 
+    /**
+     * Sets the terminal foreground color.
+     */
+    Terminal foreground(Color color);
+
     /**
      * Switches the terminal to bold mode.
      */
     Terminal bold();
 
-    /**
-     * Switches the terminal to bold mode, outputs the given text, then switches to normal mode.
-     */
-    Terminal bold(String output);
-
     /**
      * Switches the terminal to normal mode.
      */
     Terminal normal();
+
+    /**
+     * Switches the terminal to normal mode and restores default colors.
+     */
+    Terminal reset();
 }