If the coloring is at the tips of the leaves it means it's getting ready to bloom. This plant is not ionantha but T. delicata but it shows what happens.

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gratuitous all-red shot

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no the colorring is coming from the bottom up

It "sounds" like your plant has rotted. They can rot and remain green for quite some time. Please post a photo.

semaje are you growing your plant indoors or out doors? If indoors how much sun direct on to it does it get ie one hour, 2 hours, 3 hours etc per day and is it through curtains or blinds? do you have air conditioning? how long have you been growing this plant under these conditions?
If out doors are you in a cold climate and do you keep this plant in lots of sun or shade? How often do you water or mist your plant?
Without knowing these details is difficult telling what is happening.

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Its indoors by a window. Through glass. I mist it once every 2 days. It gotta a funky smell to it. I pretty sure its rot.
Out of curiosity... is there anyway I could try to propagate this? Thanks.

Tug on the center leaves and they'll probably pull right out. No chance for propagation. Ionantha is very inexpensive to replace. The water was settling in the leaf bases judging by your photo, try hanging one upside down close to your window.

yeah they do pull right out

Defiantely rot. It happened to me before, but now I hang them outside on a tree for the summer and spray them with a hose on warm days. They do great and some even flowered recently.