You use the OS X Colors window to choose colors for text, objects, and lines.
You can use the color wheel in the Colors window to select colors. The color you select appears in the box at the top of the Colors window. You can save that color for future use by placing it in the color palette.
To apply the colors you select in the Colors window to an object on the page, select the object, and then place the color in the appropriate color well in an inspector pane. You can select a color well in one of the inspectors, and then click a color in the color wheel. Or you can drag a color from the color palette or color box to a color well in one of the inspectors.
Open the Colors window by clicking the color well in the format bar and choosing Show Colors, or click Colors in the toolbar, or click a color well in one of the inspectors.
Click anywhere in the color wheel. The selected color is displayed in the color box at the top of the Colors window.
To make the color lighter or darker, drag the slider on the right side of the Colors window.
To make the color more transparent, drag the Opacity slider to the left or enter a percentage value in the Opacity field.
To use the color palette, open it by dragging the handle at the bottom of the Colors window. Save a color in the palette by dragging a color from the color box to the color palette. To remove a color from the palette, drag a blank square to the color you want to remove.
To match the color of another item on the screen, click the search icon to the left of the color box in the Colors window. Click the item on the screen whose color you want to match. The color appears in the color box. Select the item you want to color in the document window, and then drag the color from the color box to the item.