First, you can Randomize the color ramp using the "Randomize Color" button.
Also you can copy all the color values, for RGBA and HEX values, using the "Copy Color Ramp" button.
When clicking, "Select a Color" Or picking the color from the top right square of the tools, you will be able to set a color of the highest point on the color ramp you're creating. Try experimenting with two strongly saturated colors.
If you only want a specific color from the 4 color values in the ramp, you're able to click within those square, which will give you a clipboard copy of the HEX and RGBA values.