I'd guess tracking masks with an adjustment layer.
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If you are just filling the glasses with solid colour, this is relatively easy. During the shoot, use coloured tape or paper on the lenses, but choose a colour that is different to all the other colours in your shot. Typically chromakey green is a popular choice.
In After Effects you can then use a key effect, such as Linear Color Key, or Keylight, to isolate the coloured lenses and recolour them, with a Hue adjustment or a colour fill. You may need to do some masking to remove parts of the shot that aren't near the glasses.
If you plan to fill the glasses with other images, and have them move realistically with the actor, it becomes quite a bit more tricky, as you'll need to motion track the position and rotation of the glasses.
Thank you so much! it worked out perfectly. BEST