Illustrator, Pencil, Smooth Fidelity Adjust and Live Paint Tool
How to
Select #Pencil Tool
Double Click Icon to Active Pencil Tool Options
Change Pencil Tool Fidelity to Smooth
Draw Random Lines
Object / #Live_Paint / Make
Press [K] to Active #Live_Paint_Bucket (K) Tool
Open Swatches and apply color
Switch to Selection Tool
Switch to Stroke Control to Remove Lines