Photoshop question - please

[weeeplop]

how come when i try to fill in an object with blue.. it turns grey... how can i change it back??

 

[b0mbrman]

what mode are you on?

 

[goodoptics]

Edit --> undo

 

[weeeplop]

yeah.. thanks.. but i'm not that dumb.. it keeps filling in grey...mode? i'm in threshhold?

 

[gopunk]

threshold? is that a mode? go to images, mode, and go to rgb