Sorry Placid, not yet. How can I make my own datablock for lights besides editing default ones?
Look for a light like the Blue light:
Copy the code, Paste it, then edit it.
Like magic: You've got a new Light Datablock.
If you're planning to release it...
...You'll need to pack it into a seperate zip, name it "Light_Name", replacing Name with anything.
Make a txt file, name it "description", in the file, put:
Title: My Lights
Author: Me
A description for my light pack!
Save.