My Pokemon hypertlyphic cards have started to fade!! What's the deal??? [nm]

Poor Robin.... Kristen would love to trade Pokemons with you. [nm] Rick (NH_D) 23:34:51 12/31/99 (9)
I'll trade a Wingbat star for a ? Let me know!!! lol [nm] Aussie (Steve(Boston)) 23:39:33 12/31/99 (1)
We'll trade a Raichu for the Wingbat star. Deal? [nm] Rick (NH_D) 23:47:18 12/31/99 (0)
I' [nm] Aussie (Steve(Boston)) 23:39:00 12/31/99 (0)
I' [nm] Aussie (Steve(Boston)) 23:38:59 12/31/99 (5)
Oops, looks like my 486 is on the fritz!!! :-) [nm] Aussie (Steve(Boston)) 23:40:16 12/31/99 (4)
Well, I've got my 357 ready in case this thing goes south...... Herman (Herman) 00:14:21 1/01/100 (3)
I also have my potato gun with starter fluid, can you say fire hehe Jimmy (Jimmy) 03:27:10 1/01/2000 (2)
Starter fluid Starter fluid? Arnold Nobles (mopar) 16:20:35 1/01/2000 (1)
Yep! You ever seen PVC pipe glowing orange hehe Jimmy (Jimmy) 17:41:47 1/01/2000 (0)