Image Color Picker is a tool which you can use to get
colors from images. When you upload your file, the code renders
it, and displays the image.
You can move your mouse over a specific part of the image and
click to get the exact hexcode.
The first grey box is to help you visualize where your mouse is.
The second is to lock the color you select, and turn it into a
hex code.
At this point, the Geometry Dash color picker addition isn't
done yet (nor do I know when that will be). Please be patient
HTML colorcodes for the color detection
Daniel Österman for the CSS waves
Me for the Geometry Dash Color Wheel