Can you share the code snippet you’re working on now that you have implemented the notes above from me and @sorceror , as well as a screenshot of your settings screen where you picked the LED type? (I also might be missing something obvious; also don’t assume the LED spec sheets are correct necessarily).
Hue = 0 Saturation = 1 Value = 1 should be red, not green… I had this bookmarked from walking though a similar problem in the past. Working with Hues in Pixelblaze - color ranges, blending