If using Photoshop, when your gradient tool is active, you will notice on the options bar, a drop down for the style of gradient used. Further options can be found by clicking on this. From here, you can set up the colour and opacity stops, to customize your gradient.
Next along, on the bar, is a set of gradient types - Linear, Radial, angle, reflected, etc. You might want the reflected gradient for this, I don't know.
Might not be PS you're using, but most decent graphic editors should carry more or less the same sort of options for the gradient fill.
Definition: Computer rage is a heightened physiological response with associated feelings of anger and frustration resulting from using a computer or other complex electronic device. It may result in the physical assault of the computer or similar item. Computer use often leads to verbal abuse and occasionally physical violence towards the object. Computer rage may be caused by distress due to a hardware or software problem which the enraged person is unable to correct.