oooh, that would like nice on *MY* Filco 87 Red. ;-) I blame you mmmty... you were on the fence and fell off, so I couldn't help but follow.
I did buy a full function key row of clears from the last group buy. While I can see blue (and a barely brown) through them, they don't seem quite as clear as the ones on ebay. Though, I'm sure reds will be more visible anyway.