The Flat UI Light VCL Style is part of the new premium styles introduced in 10.3.1. Once installed you will find this file in your styles folder: FlatUILight.vsf To install Flat UI Light VCL Style, just make sure you are updated to 10.3.1, launch RAD Studio, then go Tools ➜ GetIt Package Manager, and you will find VCL Style – Flat UI Light 1.0. You can apply the styles to your VCL…