A fill layer works like an adjustment layer, except in this case it contains a solid color, gradient, or pattern. Like an adjustment layer, a fill layer can be edited or removed without affecting any other layers.
To create a new Fill layer:
On the Layers palette, activate the layer that you want the fill layer to appear above (you can restack it later).
Choose Solid Color, Gradient, or Pattern from the "Create new fill or adjustment layer" pop-up menu at the bottom of the Layers palette (see Figure 4).
To choose options for the Layer as you create it, choose Layer menu > New Fill Layer > Solid Color, Gradient, or Pattern, then do any of the following: Enter a Name for the layer; choose a Color for the area on the Layers palette behind the layer's eye and brush/link icons; choose a different Opacity or Mode; or click the Group With Previous Layer box to make the new layer a part of a clipping group. Click OK. All of these options can be changed later.
For a Solid Color layer, choose a color from the Color Picker, then click OK.
For a Gradient layer, choose from the gradient picker and set its Style, Angle, and Scale.
For a Pattern layer, choose from the pattern picker and choose a Scale percentage (11000) as shown in Figure 5. Optional: Uncheck the Link with Layer box to keep the pattern stationary if the layer is moved; click Snap to Origin to make the pattern snap to the current ruler origin (the location where the zeros on the horizontal and vertical rulers meet; or click the "Create new preset" button to create a preset.
Choose options for a pattern fill layer in the Pattern Fill dialog box.