Here's what I changed:

• Removed the barbs and added small ring of ribs around the adapter to allow easier removal for the inevitable when a pixel fails. Still gives a nice firm grip.
• Slimmed the base down and made a straight through path for wire clearance in high density props.
• Used a modified height range to do make the part where the seed sits transparent for a more even glow, you can change it to any color that you wish.