I don't think that green looks that bad, but that could be how the color displays on my monitor. It's its real bright and everything is a bit muted, I'd probably take it out. It would be simple to replace it without having to remake teh whole block, but it's also small enough it might be faster to remake the block than rip it out.
I sort of go by "if I feel I need to ask if I should rip something out, then I probably do, and am only asking because I don't want to" It won't get any easier to remove as you get farther into assembling the quilt.
I've got the last of the 12" blocks complete. I think I'm going to switch and make the filler blocks. I need 31 3.5" pinwheels and 34 3.5" squares. I want to get them done while I've still got a larger selection of fabric and can get a lot more variety.
