This is highly customizable dockbarx(dockx) theme.
You can modified all colors trough dockbarx preferences dialog.
To install theme unzip archive to ~/.dockbarx folder.
This theme is optimized for dock size 40 px.
Icons used in screenshot are ACYL with color #555555.
Deviantart doesn't allow to upload archives that contain other archives, so there is a link to download theme[link]