My top is faded blue and I am looking restoring it and changing it to black. Thee appear to be two options that I have come across but not a lot of reviews or experince with them.
The first is the Renovo product:
https://www.amazon.com/Renovo-Soft-Top-Reviver-Black/dp/B000637SHY/ref=pd_bxgy_263_2/146-6216862-8687207?_encoding=UTF8&pd_rd_i=B000637SHY&pd_rd_r=ce9c091d-5a1b-11e9-80e7-29197d10ef60&pd_rd_w=PrvSD&pd_rd_wg=MQg6z&pf_rd_p=a2006322-0bc0-4db9-a08e-d168c18ce6f0&pf_rd_r=RWB25BYRQZZ8P5MCABCK&psc=1&refRID=RWB25BYRQZZ8P5MCABCK
It seems they sell a cleaner and water proofer to make a complete top restoration kit. There are a few reviews on this and the consensus is that you might see some brush strokes or have lines with uneven dry times.
The second comes from a place in the UK called the furniture clinic and comes with s youtube video
https://www.furnitureclinic.com/Convertible_Roof_Restoration_Kit?utm_source=youtub e&utm_medium=referral&utm_campaign=Restore%2520convertible%2520roof
There are really no reviews on this at all that I can find. Just wanted to put this out there to see if anyone has any experience with this at all.