[vte] Bug 615417 - Reversed and one error saturation level in 0.24.0

[Behdad Esfahbod <behdad src gnome org>]

commit fddc82dde27f0cbdbc38c617808be965b83558ac
Author: Behdad Esfahbod <behdad behdad org>
Date:   Mon Apr 12 11:38:06 2010 -0400

    Bug 615417 - Reversed and one error saturation level in 0.24.0

 src/vtebg.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/vtebg.c b/src/vtebg.c
index fc6981a..701bd84 100644
--- a/src/vtebg.c
+++ b/src/vtebg.c
@@ -504,12 +504,12 @@ vte_bg_get_surface(VteBg *bg,
 #endif
 	cairo_paint (cr);
 
-	if (saturation != 1.0) {
+	if (saturation < 1.0) {
 		cairo_set_source_rgba (cr, 
 				       tint->red / 65535.,
 				       tint->green / 65535.,
 				       tint->blue / 65535.,
-				       saturation);
+				       1 - saturation);
 		cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
 		cairo_paint (cr);
 	}