This is a Rainbow Colored find indicator when using the find feature.
Instructions:
The files will extract to the folder find-rainbow.
After you extract the files, copy them to your:
Drive:/.../EverQuest/SpellEffects folder.
Select yes to overwrite.
*Do not copy the find-rainbow folder into your everquest/spelleffects folder, just the files.
To use these files you must skip the patch process or the files will be overwritten. Change your everquest shortcut icon target to read:
Drive:/.../EverQuest/eqgame.exe patchme
In most cases all you should need to do is change:
EverQuest.exe
to
eqgame.exe patchme