To Color Or Not To Color

Trying background colors for sketches by MeeraRao 

'Sketching is a continuous source of learning 

rather than a string of performances'

~Paul Laseau~

I wanted to jazz-up the sketches I did a few days ago and decided to just color-in the background with a single color to give it a more finished look.  Below are 'before' sketches.  I still am not sure what to think of this experiment ! 

'Before'  sketches 

'Drawing is putting a line around an idea.'

~Henri Matisse~