The arrows on this
page are all PNG images. The good part is that they can be expanded or
shrunk without distorting the image. Stretch them in a variety of ways
and you'll find they stay together pretty well on screen. Most images
are about 50 kb. The arrows are also much, much bigger than they
appear on this page. You can always make them smaller by clicking on
the image and then dragging inward on one of the handles that will
appear in programs like Microsoft Word, Corel WordPerfect, PhotoShop,
etc.
Adapting to your purposes:
You can save these arrows to your computer and then open them up in a
popular digital imaging program like Adobe PhotoShop Elements to change
them to suit your purposes. Play with changing the colors using the
paint bucket tool. The layers tab will show you a wealth of variations
that will let you change colors and effects in so many ways that you'll
have to watch out how long you spend playing!