I installed Eclipse Luna in Fedora 19 and facing the following problems.

1. Tab headers seems to be big compared to windows installations. I googled and edited .gtkrc-2.0 file in home directory which made tabs smaller. But I'm using High Contrast appearance instead of GTK, to get the dark background. But again the tabs appears big. What is the script I have use or edit to solve this problem.
2. I'm using Dark theme the selection of item in tree is not highlighting. How to solve this ?
3. Tool bar icons seems to be big how to reduce their size?