Add tiny lava shelf to room, concerns with fading?

[Erin]

I finally found a small shelf that will fit in my room so I can setup some lavas on it. :) Maybe 10 or so. I wanted to have this in place before winter so I could enjoy watching several lamps during the cold winter months. 

I am concerned about the potential for the liquid in my lava lamps fading. 

As you can see, there's a window to the right of the lamps, but those curtains are always closed. However, to the left of this photo is another window, and you can see the light that's shining in this morning. I don't think that strip of light will reach the bookshelf my lamps will be on, but I"m going to keep looking at it this morning. 

Just wondering what people's experiences have been displaying their lava in rooms with windows where light comes in. Anyone experienced any fading? I am so paranoid about any of the liquid fading, but I really want some lamps in my room and this is about the only spot they'll fit. I suppose I could switch where the wicker hamper is with this shelf, but then I can't see them from bed. ;)

 

Any thoughts, experiences or opinions would be much appreciated! 

[Erin]

I covered my Florence Art glitter lamps with socks once.