diff --git a/tools/essai.sh b/tools/essai.sh
index 3ecc242..109f1c7 100755
--- a/tools/essai.sh
+++ b/tools/essai.sh
@@ -6,7 +6,7 @@
 
 #  -----------------------------------------------------
 
-TMPF="tmp.fimg"
+TMPF="../funcs/in.fimg"
 
 #  -----------------------------------------------------
 function essai_rot90
@@ -47,7 +47,12 @@ function essai_contour
 ./fimgfx -vv ctr2x2 $TMPF bar.fimg
 }
 #  -----------------------------------------------------
+function essai_hilight
+{
+./fimgfx -vv hilightr $TMPF bar.fimg
+}
+#  -----------------------------------------------------
 
-essai_contour
+essai_hilight
 
 #  -----------------------------------------------------
diff --git a/tools/fimgfx.c b/tools/fimgfx.c
index cd4809d..5042fd4 100644
--- a/tools/fimgfx.c
+++ b/tools/fimgfx.c
@@ -22,7 +22,7 @@ typedef struct {
 
 enum fxid { Fx_cos01=5, Fx_cos010, Fx_pow2, Fx_sqrt, Fx_gray0, Fx_halfsz0,
 		Fx_rot90, Fx_cmixa, Fx_desat, Fx_ctr2x2, Fx_norm,
-		Fx_xper };
+		Fx_xper, Fx_binarize, Fx_hilight_R };
 
 Fx fx_list[] = {
 	{ "cos01",		Fx_cos01,	0,	1 },
@@ -37,7 +37,9 @@ Fx fx_list[] = {
 	{ "desat",		Fx_desat,	0,	1 },
 	{ "ctr2x2",		Fx_ctr2x2,	0,	1 },
 	{ "norm",		Fx_norm,	0,	1 },
-	{ NULL,			0,	0 }
+	{ "binarize",		Fx_binarize,	0,	0 },
+	{ "hilightr",		Fx_hilight_R,	0,	1 },
+	{ NULL,			0,		0,	0 }
 	};
 
 /* --------------------------------------------------------------------- */
@@ -111,7 +113,7 @@ fimg_print_version(1);
 exit(0);
 }
 /* --------------------------------------------------------------------- */
-int do_an_effect(char *sf, int fxidx, char *df)
+int do_an_effect(char *srcfname, int fxidx, char *dstfname)
 {
 FloatImg	src, dest;
 int		foo, action;
@@ -119,12 +121,12 @@ double		maxval;
 
 #if DEBUG_LEVEL
 fprintf(stderr, ">>> %s ( '%s' %d '%s' )\n", __func__,
-			   sf, action, df);
+			   srcfname, action, dstfname);
 #endif
 
-foo = fimg_create_from_dump(sf, &src);
+foo = fimg_create_from_dump(srcfname, &src);
 if (foo) {
-	fprintf(stderr, "err load '%s' : %d\n", sf, foo);
+	fprintf(stderr, "err load '%s' : %d\n", srcfname, foo);
 	return foo;
 	}
 
@@ -180,7 +182,13 @@ switch (action) {
 	case Fx_ctr2x2:
 		foo = fimg_contour_2x2(&src, &dest, 0);
 		break;
-
+	case Fx_binarize:
+		fimg_copy_data(&src, &dest);
+		foo = fimg_binarize(&dest, 0);
+		break;
+	case Fx_hilight_R:
+		foo = fimg_highlight_color(&src, &dest, 'R', 1.333);
+		break;
 	default:
 		fprintf(stderr, "%s %s : %d is bad action\n",
 					__FILE__, __func__, action);
@@ -188,7 +196,7 @@ switch (action) {
 
 	}
 
-foo = fimg_dump_to_file(&dest, df, 0);
+foo = fimg_dump_to_file(&dest, dstfname, 0);
 if (foo) {
 	fprintf(stderr, "dumping datas to file give us a %d\n", foo);
 	return foo;