Believe it or not, YES!!! Just a couple of months ago, the owner of the only pool hall in my area (in operation for more than 30 years with 16 tables) told me that they sprayed blue Windex on their tables--all covered in Simonis cloth-- for years to address blemishes and restore uniform color. The owner said you must use blue Windex (no generic stuff) to reactivate the dye in the wool. For some reason, it works well with green cloth but not blue. We didn't talk about any other colors. You spray the entire table (not just a spot here or there) and the Windex-dampened dye will take care of most discolorations. Dry with a microfiber towel. Supposed to do a good job but it won't fix burn marks. I'm guessing other pool room operators are aware of this maintenance routine. Unfortunately, it's no help to those who have gone to Tournament Blue.
I haven't had the need to use Windex, or any other cleaner, on my cloth so far. I had my 8-foot home table covered with Simonis 860 HR a little over a year ago and keep it clean with a small, hand-held vacuum cleaner and the X-1 pad that Simonis sells. I use those things nearly every day. (I'm a beginner on the table 3-4 hours a day trying to learn how to play.) I've been able to clean even pronounced chalk marks caused by long practice sessions just by using the vacuum and pad.
Please note: I don't know whether this trick is specific to Simonis cloth or might work with materials manufactured by others.