I made mine out of pillow cases and I believe valance material. I ended up using bed pillows for throw pillows as they also doubled for bed pillows. This allowed me to add different colors to three different areas and in the end was an improvement over the original.
If you seem to be interested, I can post pictures.
This mod was done in a 1983 T-1550 which had no curtains when I bought it. It did have the hardware in the tracks. I had to supply the curtain hooks.
My wife was willing to sew curtains, I just was in a hurry and found the above combinations to size.