Hmm, this is quite interesting, but I'm a bit lost 
I agree in your statement that the artist is responsible for the artwork they produce when it comes to origination and execution of the idea- i.e. the idea is not "given" from some higher entity or the creator in the way that words are given vocal channels, for example. I was meaning more on the lines of the intelligent energy working as a raw fuel for the artist to then transform in to what he may... In the same way that we harness electricity to do any number of different things.
The Van Gogh example is a great one- being depressed would clog up probably all three of the lower chakras, yet his greatest works came from those very states. Thus comes my confusion, unless I am understanding the use of the charkas incorrectly.
Another example might be creative writing- we would generally feel that a clear blue ray chakra would be ideal for doing the task of writing. It is an art which uses communication as it's vehicle. From what I remember in history class, Edgar Allen Poe was pretty messed up emotionally- likely many blocks along his chakra system. How did his blue ray center activate, or did it?
Can you better illustrate for me the concept of creative energy being released via the blockage of certain chakras? I beg your patience.

I agree in your statement that the artist is responsible for the artwork they produce when it comes to origination and execution of the idea- i.e. the idea is not "given" from some higher entity or the creator in the way that words are given vocal channels, for example. I was meaning more on the lines of the intelligent energy working as a raw fuel for the artist to then transform in to what he may... In the same way that we harness electricity to do any number of different things.
The Van Gogh example is a great one- being depressed would clog up probably all three of the lower chakras, yet his greatest works came from those very states. Thus comes my confusion, unless I am understanding the use of the charkas incorrectly.
Another example might be creative writing- we would generally feel that a clear blue ray chakra would be ideal for doing the task of writing. It is an art which uses communication as it's vehicle. From what I remember in history class, Edgar Allen Poe was pretty messed up emotionally- likely many blocks along his chakra system. How did his blue ray center activate, or did it?

Can you better illustrate for me the concept of creative energy being released via the blockage of certain chakras? I beg your patience.