[Plugin: Widget Logic] Taxonomy woes

I tried using this :

A Registered Taxonomy
is_taxonomy() ( deprecated in 3.0 in favor of taxonomy_exists() )
When a particular taxonomy is registered via register_taxonomy().

to get a widget to show only on posts of a certain taxanomy but it didn’t seem to work.

I tried both

is_taxonomy(‘color’,’black’)
taxonomy_exists(‘color’,’black’).

The widgets displayed on every page.

Any ideas?

https://www.ads-software.com/extend/plugins/widget-logic/