How change color in gradient overlay cs6?

I am using photoshop cs6 and following a web tutorial on making a business card. One step I can't figure out.

"Apply a linear gradient layer style to the warped shape. Use #841618 for the darker color in the gradient and #e82d33 for the lighter color. Once that’s done, use the Move Tool (V) to move the shape near the bottom of the canvas."

I am in the gradient overlay and I can pick what type of gradient and stuff. But I can not figure out how to change the lighter and darker color for the gradient overlay?????? Maybe this tutorial is pre photoshp cs6?

this is link
http://sixrevisions.co​m …with-stunning-typography/

Probably this:

Click the background color in the bottom of the tool palette, set color, click OK.
Same for foreground color.

Use fore- and background colors for the gradient overlay.

Thanks. Where is the tools palette? Are you talking about on the left side of the screen with all the tools? At the bottom where there are two different boxes, i don't think that i can make those colors specifically for the rectangle object i did

bphillips330 wrote in post #15199518
Thanks. Where is the tools palette? Are you talking about on the left side of the screen with all the tools? At the bottom where there are two different boxes,

Yep.
Choose the colors before going into the layer styles dialog.
Then, in the gradient overlay, you can choose to use foreground/background color.

There might be other ways, but then I'd have to check later.