Yep. It seems like it is. I just noticed when the orbweaver is set to a custom effect it completly breaks for chroma apps (at least for me) would be nice if someone else could try that. The Kraken and Firefly don't have custom effects but I think they have the same problem as sometimes synapse just sends updates and that makes them turn their color. For me it looks like this: https://www.youtube.com/watch?v=B3oIRZ-AT6A
it should be black completly and as long there is no custom effect it is black. You can force it for the firefly and kraken, too, by changing their effect in synapse while having a chroma app run and they will overwrite the chroma app at some point. The Blackwidow and Mamba TE however have no issues and stay black.