Photoshop gradient problem!

[cenerino54]

hi guys, recently I've found out a problem in photoshop. When I use in the blending option the GRADIENT TOOL and I set my own colours , In the final result the color is less bright!Is there an option that I've put wrong? here is an image of it:
http://img227.imageshack.us/img227/715/photoshopfinestra1me0.jpg (http://imageshack.us)

thx very much, cya!!