selecting color not working

[rp922]

Grabbed these screen images. For some reason I cannot switch colors using eyedropper etc.

I typically just click on one of the boxes and up pops the color options. I noticed that the top of the layer states  "@50% Layer 1, Gray/8"

I must have hit something that turned off the ability to use paint bucket etc.

When I use the eye dropper to select a color, the color box stays gray?!

Any help will be greatly appreciated.

Thanks!

[c.pfaffenbichler]

Grayscale images do not have »colors« and you appear to be working on one. 

Edit: Image > Mode > …

[AxelMatt · Accepted solution]

Your document must be in a color mode, like rgb, and not grayscale.

[rp922]

Thank you for lightning reply! How do I reset it to color mode? I must have hit a button without realizing it! Obviously I'm new to this. Thanks for patience!

[c.pfaffenbichler]

Image > Mode > RGB Color

or example. 

[rp922]

Got it! thanks much!!!