You can do many artistic things in programs such as Adobe Illustrator. One thing to try is changing text into a gradient. Let me give you some examples. First, let us start with a basic sentence.

This sentence we can very easily change color by just selecting it and going into the swatches and choosing a different fill color. I choose violet.

This is a very simple task since all you are doing is selecting the words and changing the fill. You can do more imaginative things with this text. A fun thing to try is to make this sentence a gradient. How do you do this? The first thing to do is to right click on the sentence which you should have selected and change it to an outline. Pressing the gradient box in the color choices will then give you this. The default setting in linear which means that the gradient begins from one side of the selection and ends on the other side.

All this is very nice and you can change the colors at either end of the spectrum there are still more you can do to provide variety with gradients. With the text still selected and by selecting the Gradient tool and then drawing a line now across the sentence you can create a full gradient from the entire sentence.

You can stick colors in at either end of the spectrum to give the sentence more color.

Once you are able to do this you will find so much more you can do with you text.

Here is the same sentence above with a radial gradient. The radial gradient has it is beginning at a predefined point within the selection. It is like a starburst with the center being the brightest point.

If you enjoy working with Illustrator, you will come up with more imaginative things for the words by playing with color as well as will the gradient itself. It is all up to you.