I want to change the color of these glasses to black

Question

I haven't played around with photoshop in years but I'd like to get back into image manipulation. I want to change the color of the glasses to black. I want them to look like a regular black pair of ray bans wayfarers. I want it to look realistic. I also want to change the color of the lens along with the frame. For reference this is what a regular pair of ray ban wayfarers look like:
Please advise me on what to do. You don't have to get into complete basics for me but I will ask for more help if I have any further questions.

Answer 1

That would normally be very straight forward, but with the glasses being so bright, I found I had to have two hits at it.
What you would normally do is open a Hue Saturation layer > click on the hand icon and ten sample the glasses, which would target that colour range.  You might need to drag out the sliders on the hue rails at the bottom of the H/S Properties panel to get all the greens.  Then you would either drag the Hue slider if you wanted to change the colour, or in this case, move the saturation slider all the way to left.
That would remove the colour, so you'd then move the Lightness slider to the left to darken it towards full black, but it this case you are still left with a fairly bright grey.  So you need to select the glasses - I used Color range, followed by adding some Smoothing in Refine edge, and with that selection place, add a Curves layer.  Combining the Curves and Hue/Sat layers does the job.