Hi,
before it was restored, you could see the red brick. If you get to tour the lighthouse the ranger should offer you to see a film about the restortion.
Also if you climb, when you get to the top and look out in the ocean, you can see Fowey Rocks reef light.
On your way to Key West you should be able to see 2 more reef lights from the land. The first is Alligator Reef Lighthouse (about 3.5 miles off land, it is White). There is a bridge that connects Upper Matecrumbe Key to Lower Matecrumbe Key. From either end of the bridge you should be able to see it.
At mile marker 50 turn south (left) on to Sombrero Beach Road (state road 913). Drive about 2 miles to Sombrero Beach State Park. From the beach you can get a picture (lighthouse about 4.5 miles off land). In fact when I was there the park was closed for re-model but could still get a picture from the land right next to the park (west side). This lighthouse is brown.
Both lighthouses will be on your left as you go to Key West.