Yes! Now you can easily customize graphic slider controls and buttons within popup menus. Everything you need is packed into a single sprite that can be copied into your project. You can use the sliders I made or design your own. When running a project: Click or drag sliders to change variables. To use in project: [1] To show a menu, you set the variable showMenuNumber to the menu number you desire and broadcast "Show GSlider" [2] When a slider or button is clicked, the slider broadcasts "GSliderSync". Users are free to take action when receiving this broadcast as is done in the demo. Customizing: You don't need to understand how the controls work to use and customize them in your project, but I am happy explain. The top of the script section of the GSlider sprite has comments that try to explain how to make changes.
I hope this project will be useful to other scratchers. Please let me know if you are able to use this or if you design some cool new slider controls.