Changing the colour is an excellent idea! I can't believe that even as a wannabe design student I didn't consider my choice of colours! I think I'll make it purple, as I also have the design in inverse.
As for the feminity in the piece, I was hoping that the basic outline of the shape would bring to mind the venus glyph, one of the most well known signs for "female"
Thanks everyone for the input! I'll tell you where to get the shirt and buttons once I've got it done!
