I went ahead and dyed my while interior except for the door panels which will take a bit more work. It makes the material feel a bit rougher but will supposedly break in. There is a bit of odor from the out gassing. I have been leaving the car open on hot days. It needs a bit more time.
I also read that latex house
paint works well when used with fabric medium (reduces stiffness I the material) and allows more color choices. I may try that on my dinette seats.