
Tip
If you want the image to blend with the background, you can set
the background color of the picture as transparent. Select the
picture, then chose Tools > Eyedropper from the menu bar.
Select the first checkbox and then move the mouse cursor on the
picture and click on the color you want to make transparent. This
color appears next to the checkbox. Make sure that Replace
with... is set to Transparent and click Replace.
Tip
An easy way to make the picture lighter so that the text stands
out better against its background, is to increase the transparency
of the picture or change the gamma. Both these adjustments can
be quickly made from the Picture toolbar.
In addition to pictures you can add a number of other background
objects, for example decorative lines, text and shapes. Figure 22 is an
example of a slide master with a custom background gradient, a
background picture, another picture in the top right corner, some
decorative lines and some customized presentation styles.
Figure 22: Example of a complex slide with several
modifications
Slide master styles
Within the slide master you can define a complete set of styles that
define the default appearance of text and graphic objects inserted in
slides based on such background. If for example your slide master has
38 OpenOffice.org 3.2 Impress Guide
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