Need help regarding stained spider-man fabric

[Botzae]

Hey, new on here, made an account just for this. So I’m currently doing a classic black and red spidey suit with red and black fabrics. My black fabrics for some reason turned brown despite them being in the package, naturally I tried washing them going off of Spideyfit’s how to wash suits video, it still did not work. Any suggestions? Here are some photos from my instagram:

 

[montysaurus]

Commercial black fabric dyes are made of very dark blue, red, and/or green pigments. If the dye does not fully absorb all of the color, it will look more like one of the base colors (in your case, red pants + green dye colorant = brown)
Found this on the internet. Probably a bad batch of in or the perhaps it was stored in a hot place?

 

[Botzae]

The fabrics were always kept in my shelf which was always kept cool, so probably a bad batch. Do you reccomend I try redying it with fabric dye to make it black?