u/Alarmed-Ad-7261

hey so how red is too red? I've got several nepenthes and they're doing alright but a couple of them are turning quite red on their leaves. I only worry because my first nepenthes almost died because of too much light, but that was Drosera capensis level light and it turned brown and dry very quickly so it's not like this where the leaves just seem to have developed a nice tan. pictured is a (first pic) Nepenthes Dactylifera that's been in my hands for just a couple weeks and the second/third are one that I haven't identified yet that I've had since the middle of January. at what point does normal coloration turn to sunburn?