ColorPicker: Selected Color value should start with a '#' in hex format

[kstruyven]

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Current behavior
The ColorPicker input component returns a value for the Selected Color in hex format (default) without the '#' in front of the hex value. This sole value is not supported by other html style elements.

Expected behavior
Add a '#' in front of the returned color value.

What is the motivation / use case for changing the behavior?
It doesn't make sense to leave out the '#'. Every other html element's color style requires a '#' in front of color hex value. Now, we have to change the value of the model to specifically add a #, before it can be used somewhere else.

• Angular version: 4.0.3

• PrimeNG version: 4.1.0-rc.3