Ive had the same problem a long time ago
first make sure nothing is selected no other window is opened to do with ps.
If that aint working just close it and reopen it if that dosent work restart pc if that dosent work ur fucked..
my ps dont want to change color anymore.. and this is very needed-.-' god damn my photoshop is old. it just change the colour to grey all the time..
Ive had the same problem a long time ago
first make sure nothing is selected no other window is opened to do with ps.
If that aint working just close it and reopen it if that dosent work restart pc if that dosent work ur fucked..
ur probs in greyscale
[IMG]https://i930.photobucke*****m/albums/ad149/MattPreston/God-of-the-ex.png[/IMG]
Shifty sexy shit
[IMG]https://i152.photobucke*****m/albums/s198/blackbliss11/scrcrwgift.png[/IMG]
Switch out of greyscale
image>mode>rgb color
If that doesn't work I think there is a way to reset everything back to the original settings. Not exactly sure how to do it at the moment, but I believe its under "window". I am also not entirely sure if this resets everything or just the windows (like brushes window, layers, nav.,etc.)
Give it a try