Based on a picture I took of a friend's cats. Simple, I know.
I can't decide what colour it looks best in. For more options, click here:
http://claudecub.tripod.com/lost_a_lens_colour_options.gif

The gif isn't working... maybe it's just me.
I like the idea. I think a neutral color would look good-- not anything really light, just a little less jarring? A brown, gray, army green?

what are they looking for? Why a lense?

When I took the picture this is based on, they were actually eating cat treats off the porch floor.

To me they look like they're looking for someone's lost contact lens.

A group of cats really doesn't float my boat.

Scrap it.

i don't think many people would buy a shirt with cats on it, it's not bad though

way to make the most out of four colors, but it's only (marginally) funny if you know the title.

you can add a contact lens somewhere to solidify the point

This has been very helpful. I still want to use these cats, but I'll try to think of something to add to make the image more interesting.