Gradient background separate color picker for each "gradient point"

When I position both colors on top of each other at 50, it takes multiple clicks to change colors. First, I'll need to change the position of the color circle to know which color it is. Change the color or click the other circle, and change the color. Then, position it again to 50. If separate color pickers are not doable, probably a list of all the colors selected in the gradient background picker and a color picker beside each so we can easily change colors.