Safer Surfacing - colour options

I had to do a rapid logo last night in about two hours and this is how it came out. I might get a chance to improve on it at some point, so any feedback would be much appreciated.

Safer Surfacing are doing some pretty cool things with our old tyres, and doing their uppermost to make our planet just that little bit nicer.

Check them out at www.safersurfacing.co.uk