Recoloring clothing that has patterns in it....

Try this:

1.Open the image

2 Select the jacket with the magnetic lasso tool (I selected a portion for demonstration)

3.Place the selection on its own layer (press CTRL+J)

4.Duplicate this layer

5.In the layer created in step #3, convert to black/white (press ALT+CTRL+B)

6.With the layer created in step #4 active, open a Hue/Saturation adjustment layer above it, and check the colorize box. Then, use the sliders to adjust the hue/saturation/brightness to suit.

7. Merge down the top 2 layers

8. Drag the b/w layer  to the top, and set then layer's blending mode to Luminosity.

Here the result of applying the frequency separation script of Elements+ and masking the 'detail' layer. Masking also the textures layer would blur more, but would also hide the texture which still reamains visible in the black pull-over.

In theory, the issue with the patterns is a 'frequency separation' matter after a selection problem.

We want to keep the low frequencies: the general tones (highlights and shadows around the sleeves for instance,

We want to keep the fabric texture (wool...)

We want to get rid of the middle frequencies, the drawing pattern (Prince of Wales?).

It's similar to the separation techniques used in portrait retouching, where we want to keep the shadows and highlights, keep the skin texture but we want to hide skin defects.

I'll have to test if the frequency separation script from Elements+ may help. However, it's a very hard task and I believe we'll be able to tone down the pattern, but removing it in a reallistic pattern will be a challenge.

Glenn, it's not entirely clear what you have in mind.  It is fairly easy to change the color tone of the pattern.  Select the clothing with the pattern, copy the selection to a new layer, add a solid color fill layer, and create a clipping mask.  It will end up something like this:

But it is far more difficult to remove the underlying pattern and replace it with a new solid color material or different pattern unless you perhaps clone the material from another article of clothing.

One alternative I came up with was to add an Emboss filter over a grey fill layer, to emphasize the creases and wrinkles and downplaying the fabric pattern:

After adding a color fill layer, this was the result:

To remove some more of the pattern, I added a gaussian blur and ended up with this:

I am going to ping @Jeff Arola  to see if he has any better ideas.