Picker Dot is difficult to move use and move around

[JosephShepin]

Hi,
I like your code, however their are some real usability concerns I have. The hollowed out grey circles that are used to select a color, are not very responsive. Its almost impossible to drag the circle around like people intuitively do. Additionally for some of the horizontal bars, you have to slide the dot, where in some menus you have to tap in a different location. The "wheel" tab also barely works. This is made worse if you have a page that scrolls. I would love to see these issues fixed because their is serious potential, but right not its not something that can be sent to users.