In case you were also looking for a blue PCI NIC and 1394 card, here are two model numbers from my own stash. I can't speak to the quality/reliability of these cards, only that they are blue!
Netgear FA310TX Rev 2. However it's only 10/100 not gigabit. And honestly it's slightly more "teal" than it is blue, but it's closer IRL than in the photos.
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Belkin F5U503 Rev S-1
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XP: A64 3000+ S754 / 2GB DDR / 500GB SATA / Audigy1
2K: AXP 1700+ @ 1900+ / 1GB DDR / 120GB IDE / X800XL / Audigy 2ZS
98SE: Duron 900 / 512MB SDR / 20GB IDE / Voodoo3 3000 / Vortex2
95: P200 MMX / 128MB SDR / 6GB IDE
DOS: NEC PowerMate 1 / 286 / 640k