Thanks for working these combinations through. Not sure the colours work as well as your original combinations.
I really like your abstract symbol. i see something that has been opened up, and inside is a square speech bubble. The opening up of a communication pathway!
Do you think the introduction of a fourth colour would assist? If so, I have placed a link below to an image with the word Initiative in it. I quite like the four colours used in this image.
http://www.wishart.net/portfolio/non-healthcare-identities/Thanks
Bernadette