Re: making objects look plastic
Hi abs
For the colour, select the white area, with the magic wand tool,(this should select everything apart from the tap) then Select>Invert, now get the Paint Bucket Tool(turn down the Opacity to around 30%) then Fill with the appropriate colour.
Now for the 3D look, with the Tap still selected, Go to Layer>Layer Style>Blending Options>Bevel and Emboss>Contour, adjust the settings until you have the look you are after.
Then Select> Deselect.
For the plastic look, you want to go to Filter>Artistic>Plastic Wrap, then adjust until you get the look that you are after.
I hope this helps, please feel free to ask more, if you are still having problems.
Regards, Tiff