After the preset loads, you should get a nice blue jewel effect. When you are done, be sure to leave the area selected. The blue jewel is nice, but we don't always want blue. Rather than use 20 different presets, we can use the layers feature of PSP 5 to get almost any color we want. Now set your foreground color to whatever you like and just fill in the selected area with your Flood Fill tool.
Many different colors are possible.
Sometimes other blend modes can have a great effect. Experiment to see which works best with your graphic. Another interesting effect can be achieved by applying the preset over a color other than white. This can give deeper, darker colors. The jewels below were created using purple, green, and red as the starting colors.