If you just once want to know the color, you can take a screenshot, load that with your favorite image editing tool, select the color and have the value…
Say I use a dropper tool and figure it out… the only way I see to set it in the developer studio is by using the color picker which for some reason does not have a corresponding text box to set the RGB or HEX value. So even if I know it I can’t set it in the settings…
I’d have to set it in code which is kind of annoying. Maybe this is fixed in a more recent version of Xojo.
I did a quick google search and IT TURNS OUT that if you go under Applications → Utilities there is a nifty tool there called Digital Color Meter which lets you dropper anything on your entire screen and it will tell you the RGB color for it. I may need to convert that to HEX to make a color constant out of it but handy tool!