New flat UI controls kit is available for purchase in LabVIEW Tools Network.
The design of controls is chosen to be flat and in four colors (red, green, blue and grey) so to be suitable for almost all modern applications.
The library includes customization of almost all control types: numeric, string, array, cluster, listbox, graph, chart, ring, switches, general buttons, icon based buttons, etc.
Feel free to dowload it and try. The toolkit evaluation period is 30 days.