Judging from the text in the dropdown box, it looks like the Window Text color has been set to gray in that skin. If you have SkinStudio, open the skin in it and go to the Classic Colors section - you can change the Window Text color there (black would probably be a good choice). Save the skin after making that change and reload it using the Re-apply Skin button in SkinStudio. Post back if that doesn't get the job done.