Color pickers - cuts last character of color value in input field.

[kulmegil]

Steps to reproduce:

1. Use any color related option, e.g. background color for dock.
2. Click custom.
3. Select desired color, copy value to clipboard
4. Select different color
5. Paste value back into input field.

Expected:
Color value is restored.

Actual:
Different, nearly transparent color is selected.

Probably the input cuts last character of the color value so when user restores it is parsed as different color.