Your cabin is great Donna. Very attractive.
My first question would be do you ever open the curtains? If they permanently closed I would go with a piece of opaque plastic that would let in some light but shut out prying eyes. Thin stuff, about 1/8" thick would be light weight. You could use quarter sized velcro buttons at the corners to adhere it to your ports.
If you want a degree of privacy yet to be able to see out, consider lace. I found some with a nautical motif and use it in my galley over the dinette. It allows me to see out and in the daytime cannot be seen through clearly. At night is a different matter.
I have a piece of fabric (hemmed) that I clip (clothes pin) to the top of the lace. It also serves me well when the sun in shining in.
This was the original lace over my galley sink:
On our 40'er we used two layer curtains in the main salon. There was the blackout type with a "prettier" one in front. Same hooks.
You've got a great cabin Donna. What you have is a-okay. It looks like coral... visit a fabric store and find some you like better if you want to switch. That's one thing I like about boats. We can change the whole look of a cabin with minimal expense.
I switched out the curtains shown above for $2 just the other week. My lace finally was beyond repair. The sun rots stuff. I'm not enthralled with the result to be honest, so I'll do it again when I find a better fabric. Lined (add white to the "back side" would keep your inside pretty from fading.
Vignette here: Fast Window Curtains (a thrift store recycle) vignette on janice142
Frankly though by the time something starts to fade I'm ready to "redecorate" so it rather works out for me. I do not line stuff anymore.
Having windows for me makes all the difference in the world. I love seeing the world. With the air conditioner off I feel like I am existing at the edge of the world, just me and nature. I like that.
It gives me time to paint, read, and relax. For a place to sleep though... well, I'd be interested to know what you chose in the end. For the meantime though your coral fabric curtains look a-okay.