Are you referring to the tweed hull liner, or the vinyl partition walls and ceiling?

 

Cloth coveredvwalls.

 

There are various companies that make vinyl/fabric spray dye, SEM, Duplicolor, Rustoleum being the big players. Ive used it on vinyl and also carpet and it works real good. there are many colors to choose from, but you have to apply it evenly and sparingly.

If you just want to clean the current color, its hard to beat a 50/50 mix of bleach and water just sprayed on and vacuumed off.

 

I'm looking into doing this same thing to the 1989 Pink fabric walls and ceiling of our 300 Sedan Bridge. What I'm leaning towards most right now is chalk paint, you cut it with water and paint it on with a wet brush. I've found multiple videos of people doing fabric chairs. The only thing that I'm worried about is I'd like to go white and I'm nervous that the amount of coats I'll have to do will end up looking like I painted and not dyed the fabric, or just that the fabric will become harder to the touch. So, I'm also leaning towards doing just the ceiling in white and then the walls in a grey from RIT. The biggest thing with dye is that there can't be any stains, otherwise you'll have the stains coming through. Well, we all know with our boats that there are going to be stains on the headliner , which is another reason the chalk paint is the best choice I think. Here's what I'm talking about. There's a brand call Annie Sloan, but it's twice as expensive and harder to find.
https://www.rustoleum.com/product-catalog/consumer-brands/chalked/ultra-matte-paint/
Here's a video of it being done.

Once I get the electrical and engine work done, I'm planning to do this, also think I should wait until it warms up a little more.

 

The biggest thing with dye is that there can't be any stains, otherwise you'll have the stains coming through. Well, we all know with our boats that there are going to be stains on the headliner

Not mine! The rich PO put in a whole new buttery real leather creamy white cabin headliner. Oh hell ya he really did.
No you can’t buy it, not for sale!