The word that had been on the tip of my tongue 'exhilaration'. It came to me as I did the washing up, the irony of the chore I was doing wasn't lost ;o)
One of the problems I had was in trying to keep it concise which got me thinking of haiku's....
A calm sea whispers -
I'm painting frantically
capturing the light.
I don't think that this qualifies but wouldn't it be a fun way to write an artist statement.