Update drawing example to at least compile

examples/drawing.c

@@ -1,9 +1,9 @@
 #include "c2logic/builtins.h"
 extern struct MindustryObject display1;
 void main(void) {
-	drawcolor(128, 128, 0);
+	drawcolor(128, 128, 0, 0);
 	drawpoly(40, 40, 6, 10, 0);
-	drawcolor(0, 128, 128);
+	drawcolor(0, 128, 128, 0);
 	drawpoly(40, 40, 3, 10, 180);
 	drawflush(display1);
 }