I made sure the background color swatch in the lower left of the tool box was set to blue. Then I went to Image>Resize>Canvas Size> and changed the sizes. Then I set the Color Extension to the background color blue, and the little box to the right of this showed the blue I wanted.
Then I clicked OK.
The sizes changed properly, but the color won't change colors at all. It stays an ugly putty brown, no matter that I have tried every single way in that color extension box pull-down menu.
Any help will be much appreciated.
Thanks, but this is not working either. I suspect it works only for jpg files but not for gif files. K.
It can be changed in the lower right 2nd icon.
For your existing file, you can try using something like the paintbucket to fill it with the color, or making a hue/saturation adjustment after selecting the brown canvas with the magic wand.
I'd try deleting preferences to see if you can keep it from happening again: quit the editor then restart it while holding down ctrl+alt+shift (command+option+shift on a mac) and keep those keys down till you see a window asking if you want to delete the settings file. You do.
I tried this method too, and it did not work. I will try Preferences.
In the meantime I have discovered that only jpg files will let me color the canvas but gif files won't.
To change GIF files (or any kind of file, for that matter) you must be in RGB mode. Go to Image>Mode>RGB. That's why you aren't getting what you chose.
Bravo! That did the trick! Thanks so much, and have happy holidays.
You, too! Glad you got it sorted out.
I did the Settings part you suggested, and it still won't work. It still comes out brown only. K.