From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
Each control can be colored differently (that's part of the point of a graphical user interface). You need to select the coloring tool from the tools palette (if you don't see it you need to enable it in the Window menu) and then you can color the ring whatever color you want (unless it's a dialog ring which takes its appearance from the OS.
To learn more about LabVIEW, I suggest you try searching this site and google for LabVIEW tutorials. Here and here are a couple you can start with and here are some tutorial videos. You can also contact your local NI office and join one of their courses. In addition, I suggest you read the LabVIEW style guide and the LabVIEW user manual (Help>>Search the LabVIEW Bookshelf).