Choose a foreground color. (See Choose colors in the toolbox.)

Select the Paint Bucket tool  .

Specify whether to fill the selection with the foreground color or with a pattern.

Specify a blending mode and opacity for the paint. (See Blending modes.)

Enter the tolerance for the fill.

The tolerance defines how similar in color a pixel must be (to the pixel you click) to be filled. Values can range from 0 to 255. A low tolerance fills pixels within a range of color values very similar to the pixel you click. A high tolerance fills pixels within a broader range.

To smooth the edges of the filled selection, select Anti-aliased.

To fill only pixels contiguous to the one you click, select Contiguous; leave Contiguous unselected to fill all similar pixels in the image.

To fill pixels based on the merged color data from all visible layers, select All Layers.

Click the part of the image you want to fill. All specified pixels within the specified tolerance are filled with the foreground color or pattern.

If you’re working on a layer and don’t want to fill transparent areas, make sure that the layer’s transparency is locked in the Layers panel. (See Lock layers.)

Choose a foreground or background color. (See Choose colors in the toolbox.)

Select the area you want to fill. To fill an entire layer, select the layer in the Layers panel.

Choose Edit > Fill to fill the selection or layer. Or to fill a path, select the path, and choose Fill Path from the Paths panel menu.

In the Fill dialog box, choose one of the following options for Use, or select a custom pattern:

Fills the selection with the specified color.

Fills with a color you select from the Color Picker.

Specify the blending mode and opacity for the paint. (See Blending modes.)

If you’re working in a layer and want to fill only areas containing pixels, choose Preserve Transparency.

Click the OK button to apply the fill.

Select the part of the image you want to fill.

Choose Edit > Fill.

From the Use menu, select one of the following:

Seamlessly fills the selection with similar image content nearby. For the best results, create a selection that extends slightly into the area you want to replicate. (A quick lasso or marquee selection is often sufficient.)

(Enabled by default) Algorithmically blends the color of the fill with the surrounding color

Click the inverted arrow next to the pattern sample, and select a pattern from the pop‑up panel. You can load additional patterns using the pop‑up panel menu. Select the name of a library of patterns, or choose Load Patterns and navigate to the folder containing the patterns you want to use.

You can also apply any one of the included Scripted Patterns to easily create a variety of geometic fill patterns. Select Scripted Patterns at the bottom of the fill dialog box, and then choose a fill pattern from the Script pop-up menu.

Restores the selected area to the source state or snapshot set in the History panel.

Right-click the work canvas, and choose Gray, Black, or Custom. (To specify the custom color, choose Select Custom Color.)

Choose a foreground color.

Select the area or layer you want to stroke.

Choose Edit > Stroke.

In the Stroke dialog box, specify the width of the hard-edged border.

For Location, specify whether to place the border inside, outside, or centered over the selection or layer boundaries.

Specify an opacity and a blending mode. (See Blending modes.)

If you’re working in a layer and want to stroke only areas containing pixels, select the Preserve Transparency option. (See Lock layers.)

In the Layers panel, click the New Layer button  to create a new layer for the circle or square. Isolating the circle or square on its own layer makes it easier to work with.

Select the Elliptical Marquee tool  or the Rectangular Marquee tool  in the toolbox.

Drag in the document window to create the shape. Hold down the Shift key while dragging to constrain the shape to a circle or square.

Choose Edit > Stroke.

In the Stroke dialog box, type a value for Width, and then click the color swatch to display the Adobe Color Picker.

In the Adobe Color Picker, locate the color range you want using the triangle sliders on the color spectrum bar, and then click the desired color in the color field. The color you select appears in the top half of the color swatch. The original color remains in the bottom half. Click OK.

Set the location for the stroke in relationship to the marquee by choosing Inside, Center, or Outside. Adjust the other settings as desired, and click OK. Photoshop strokes the line using the color and stroke settings you set.