I have re-worked the task and scene appearing on this Tasker forum. So, original credits goes to 'Patrick Herbst' and the other members that offered later versions.
These are the changes I have made on my new version:
· Re-worked main UI
· Made it faster when choosing and rendering the picked color
· Solved an error that caused the sliders to return to their previous position, showing a wrong final color selection
· Reduced number Globar %vars to just one
· Now you can copy the hex color to clipboard