Here's a weird variation. This is basically just the red part. So on your desktop you will only see the part that is red. The rest is transparent. Same rough edges, though. I could also just use the Zombie Panic eye at the top.
And why are you making it red? Everything else (website, forums) are blue and white. I think we agreed that blue and white looked better than red, which screamed "OMG LOOK OVER HERE WE HAVE ZOMBIEZ!!1"
Yeah, all you have to do is change the hue. No biggie. I can alter the edges and such. The whole point was to have a transparent background hi. But I could make it black of course. I'd cut off the edges or round them if I did. It should just be a plain square. Too boring that way. So what do you want? You want it blue with a black background, or a transparent background (so you will only see the eye)?
Oh and, I can see the white edges. Doesn't make sense since the background was originally black. Maybe they were created in the transfer to icon size somehow. Before I fix it though, I have to know if you want the transparent background, or it will be a waste of time.