Here's another way of colorizing white (and neutral) objects that will work equally well in Photoshop and Elements - the C-O-M method:
1. Select the portion of your photo you want to colorize.
2. Create a new 'Solid color' fill layer with the color you want to apply.
3. Set the blending mode of the new layer to 'Multiply' (drop-down menu in upper left of layers palette) and set the opacity of the layer to 50%.
4. Make two copies of the new layer. This can be done simply by dragging the layer icon (of the solid color layer) to the new layer icon at the bottom of the layers palette (twice).
5. Change the blending modes of the two new layers so that, reading from top to bottom, the Solid color fill layers are set to 'Color', 'Overlay' and 'Multiply' - or C-O-M.
6. Fine tune the opacities of the three layers to achieve a realistic rendering. In this instance the opacities ended up on 30%, 55% and 40% for the Color, Overlay and Multiply layers respectively.
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