Use the Colour tab's Colour Picker to copy any colour on your page, and then apply the colour to other objects. By default, custom colours are added to the publication palette on the Swatches tab.
On the Colour
tab, click the Colour
Picker.
Click on your chosen
colour with the pickup
cursor.
To magnify the colour
swatch (as below), press and hold down the mouse button.

On the Colour
tab, the Picked Colour
swatch updates with your custom colour.

Your custom colour
swatch is also added to the Publication Palette
on the Swatches tab.

You can now use this swatch to apply colour
to other objects on your page.
Select the object you want to colour.
Set the area of the object to be filled by clicking the Line, Fill, or Text button.
Select the Colour tab's Picked Colour swatch or the custom colour swatch on the Swatches tab.