do you have this same ribbon but in red?

We currently only off black thermal transfer ribbons. However, I will be happy to forward you request for colored ribbons to our Product Development Team for future considerations.

I understand you only offer black thermal transfer ribbon, but I would be interested in dark (such as Navy) blue should you ever offer other colors

Although we don't currently offer any colored thermal ribbons, we'll be happy to forward the request to our Product Development Team for future consideration.

Is this compatible with the Zebra ZT410?

Zebra's ZT410 specifications suggest that our TR3654ZW may be a better fit. The printer specifies a standard length of 1476' on a 1" core with a width of 2" - 4.33". https://www.onlinelabels.com/products/tr3654zw

Is this compatible with the Zebra ZD421T?

The TR3653ZW is a 2.36" x 984' thermal ribbon on a 1" core which meets the specifications of Zebra's ZD421T.

Is this compatible WITH ZEBRA TLP3842

Our TR3633 thermal transfer ribbon is coated side out and can be used with a variety of Zebra brand thermal transfer printers. Zebra's TLP 3842 only allows for a 0.5" core so you may want to review our TR2181 at the link below instead. https://www.onlinelabels.com/products/tr2181