So, I came across this and decided to chime in since I actually have some artifacts of the old Citadel paint line.
When I first started out, I bought sets like crazy! Here are the remnants of the Citadel Ork and Eldar, Creature, Expert, Monster, Metallic and Space Marine paint sets. Plus some I picked up individually. The first pic from left to right is: Imperial Purple, Worm Purple, Fire Dragon Crimson, Hobgoblin Orange, Go Fasta Red, Terracotta, 2 pots of Blood Angel Orange and Sunburst Yellow (I think) Second pic has, from left to right: Chaos Black, Salamander Black, another Black, probably Chaos, Codex Grey, Ghoul Grey, 2 blues that might be Enchanted Blue or Moody Blue, Marine Dark Blue or Midnight Blue (I honestly don't know any more and they aren't labeled!) Spearstaff Brown, Snakebite Leather, Hawk Turquoise, Bilious Green and Scorpion Green. The third pic are the metallics, left to right: Chainmail, Polished Blue, Glistening Green, Beaten Copper, Dwarf Bronze, Burnished Gold, Shining Gold and 2 pots of Mithril Silver. The last pic are the inks, from left to right: Red, Orange, Yellow, Green, Blue, Purple, Brown, Chestnut and Black.
Before you ask, some of the old colors just didn't last through storage (probably because I didn't store them correctly also!

) Bleached Bone, Goblin Green, Blood Red, Skull White, Orc Brown, Bad Moon Yellow, Titillating Pink, Elf Grey, Beastial Brown and *sigh* Tin Bitz! (Oh, I gave away Amethyst Purple to my Eldar playing friend back in the day) I mourned every one that didn't survive...but thankfully, there's alternatives out there that replicate those colors and I've replaced some already. The only P.I.T.A. about them are the metallics clumping up after all this time and they take forever to shake to a usable condition!