We are liking the concept of colorful shape as in entry 4 and 6. If the addition of another colour will work, this is good you can check out www.bourkes.com.au to see what we mean. If you can make blue green and yellow work? OR blue, green and ??????
can you have multiple infinities in teh same logo.....overlapping etc. one blue, one green, same logo. a thought would be if you could make 2 infinities (one ble and one green) make a kind of tree shape? see how you go.