I was on a quest for spacesaver with blues for a while. The only ones I found were:
in current production:
-dsi modular mac (perfect, but $150)
From ebay:
-qtronix scorpius kt-305 (Identical to cherry g80-1800. I bought one of these qtronix ones for $35 shipping included on ebay. One reviewer on these forums mentioned they had blues. Mine had whites that were identical to blues (perhaps the precursor to the blues which were white in color?). This is a spacesaver board with a numberpad but much shorter than normal board cuz arrow keys squished under qwerty section). The layout is perfect but I've since decided I like browns and/or blacks instead for switches. I'll probably put it up for sale soon, and I'll sell it 'at cost' if you're interested
-Cherry g80-1800 - somewhat hard to find but should have blues (should verify with seller tho, I think various versions exist). Available out there with or without the win keys, and in beige or black. Relatively hard to find though, and prices vary dramatically (I've seen them on ebay anywhere from $50 to $200).
Again it has the number pad but in a squished spacesaver layout.
-smk88 with blues as imav mentioned - nearly impossible to find.