diff --git a/tools/mkfimg.c b/tools/mkfimg.c
index 3055866..f7e0837 100644
--- a/tools/mkfimg.c
+++ b/tools/mkfimg.c
@@ -1,4 +1,5 @@
 #include  <stdio.h>
+#include  <string.h>
 #include  <stdlib.h>
 #include  <unistd.h>
 
@@ -7,9 +8,27 @@
 int		verbosity;
 
 /* --------------------------------------------------------------------- */
-void help(int lj)
+#define		T_BLACK		0
+#define		T_DRAND48	1
+#define		T_RGB_0		2
+static int get_type(char *name)
 {
-fimg_print_version(1);
+
+fprintf(stderr, ">>> %s ( '%s' )\n", __func__, name);
+
+#define TEST(str)	( ! strcmp(name, str) )
+if TEST("black")	return T_BLACK;
+if TEST("drand48")	return T_DRAND48;
+
+return -1;
+}
+/* --------------------------------------------------------------------- */
+static void help(int lj)
+{
+
+puts("Usage:\n\tmkfimg [options]  quux.fimg width height\n");
+
+if (verbosity) fimg_print_version(1);
 
 exit(0);
 }
@@ -20,32 +39,45 @@ int		foo, opt;
 int		width, height;
 char		*fname;
 float		fvalue;
+int		type = 0;
 
 FloatImg	fimg;
 
-while ((opt = getopt(argc, argv, "ho:v")) != -1) {
+while ((opt = getopt(argc, argv, "ht:v")) != -1) {
 	switch(opt) {
 		case 'h':	help(0);			break;
+		case 't':	type = get_type(optarg);	break;
 		case 'v':	verbosity++;			break;
 		}
 	}
 
-if (4 != argc) {
-	fimg_print_version(1);
-	fprintf(stderr, "Usage:\n\t%s quux.fimg width height\n", argv[0]);
+#if DEBUG_LEVEL
+fprintf(stderr, "argc %d optind %d\n", argc, optind);
+for (foo=0; foo<argc; foo++)
+	fprintf(stderr, "%3d  %s\n", foo, argv[foo]);
+#endif
+
+if (3 != argc-optind) {
+	fprintf(stderr, "%s need filename, width & height\n", argv[0]);
 	exit(1);
 	}
 
 fname = argv[optind];
 width = atoi(argv[optind+1]);	height = atoi(argv[optind+2]);	
-fprintf(stderr, "making  '%s'  %d x %d\n", fname, width, height);
+
+if (verbosity) fprintf(stderr, "making  '%s'  %d x %d\n", fname, width, height);
 
 foo = fimg_create(&fimg, width, height, 3);
 if (foo) {
 	fprintf(stderr, "create floatimg -> %d\n", foo);
 	exit(1);
 	}
-fimg_clear(&fimg);
+
+switch(type) {
+	default:
+	case T_BLACK:		fimg_clear(&fimg);		break;
+	case T_DRAND48:		fimg_drand48(&fimg, 1.0);	break;
+	}
 
 foo = fimg_dump_to_file(&fimg, fname, 0);
 if (foo) {