To view the original post, please click hereInteresting. I pulled a bunch out of a sponge and crafted several and they were both hue 306. Are you sure you weren't looking at a confusion potions? Those have a hue of 1165. In any case, they should all mix together considering it's the same potion.According to the data in the Enhanced Client, the hues are actually not the same between crafted and barrel sponge generated invisibility potions:
Hue ID of Barrel Sponge Invisibility Potions: Item Color ID: 306 R: 160 G: 160 B: 224
Hue ID of Crafted Invisibility Potions: Item Color ID: 1165 R:192 G: 192 B: 232