Photoshop CS2: Can only use grayscale?

Question

I was using Photoshop earlier today, and I must of pressed some keyboard shortcut by accident or something, but when I try to select a color, it remains to be a variation of grayscale. I cannot pick a color! How can I remedy this?!

Answer 1

Two ways of solving this issue.
1. goto Menu --> Image --> mode --> you see grayscale being checked , change it back to RGB or CMYK or your choice.
and dont flatten the image on prompt.
2. Restart Photoshop and try.

This should do.

Answer 2

sometimes it is easier to reinstall rather than debug. i would recommend a reinstall because it is very hard to find what changed specially for someone like me who can't see it physically.