Here is tan trim painted with duplicolor vynil and fabric paint. The mucusy looking white stuff is fabric glue from when I attempted to wrap over it. But just take a look at the corner. Your soft material is turned to crusty, rigged and just plain ugly looking hard fabric.
Over the past 4 months I have dyed, spray painted and treated basically every interior part of our cars. I dont know which cars youve seen but spray painting your interior fabric, especially an ISF is horrible. Pictures dont count, you have to sit in the car and touch it and look at it up close.