Comparison: Eff Dark Zucca vs CiM Tiger Lily

For ease of comparison, here is Effetre's Dark Zucca (foreground) shown with CiMs Tiger Lily.

The finished beads are virtually identical, but the unworked rods are quite distinct. Both seem to have a slight transparency in areas that have not been heated and cooled multiple times, which adds to the juiciness of the colour.

Barring unforseen reactions - I'd say these two colours can substitute for each other.