Try for non-earth tones in the colour palette too. Love the colours so far, but may be a little too 'earthy'. Don't want it to come across as too 'natural' or 'hippy'. Think smart corporate.
All the entries so far are not that 'fresh' looking. We are after something modern and suitable for use online. Think of the lovely aesthetic of icons and graphics you see on the most modern-of websites. I would call it an 'apple' aesthetic, rather than a 'old microsoft' one!