What product to clean/colour roof?

[A900ss]

My Chim roof looks a bit grubby, nothing major but I want to clean it up.

I have read reports of Renovo that are absolutely superb and others that totally slate the product.

Does anybody have any other recommendations for roof cleaning?

Many thanks.

[geoffphead]

Renovo is great if used correctly i have had soft tops for 25 years and swear by it not at it!!
The colour restorer needs to be used a few more times than it says on the tin but use all three products for best results .
cheers Geoff