It’s this problem !
I am in Edit mode (T) with an 3D object with a texture (here Number 32).
I move with my mouse+clic the red Edit point with or not Move(W) but I forget to put RGB Off, M on 
So the texture becames colored !!!
When I make CRTL Z colors on canvas disappeared but not on the Texture
What is the trick for reload original texture 32 in menu Texture?
Remove don’t work !
May be :Texture Inventory Import (but fordidden in Demo version 
Pilou
Hey Pilou!! I think that haven’t trick !!! Sorry !! :rolleyes: :rolleyes:
my trick for this is to clone the current selected texture before starting any mesh editing… like this if something happen, i just reload the first one.
Sorry Frenchy, the only precaution I can think of is to make a copy of the texture before hand, so that if you accidently paint over your texture, you have the other one as backup.
Oops just noticed Sarum has basically said the same as me :rolleyes:
Hi Sarum and Grub
Thanks a lot !!! That’s the trick !!!
I think that your clone method texture must be a natural reflex for all Zbrushers without memory like me
Pilou 
The tricky solution was also RGB off :)Matererial On
Pilou
Yes it’s a shame that can’t be undone.Backups the answer and after that, backup!!