A mate of mine bought a new skiboat every couple of years and they were always the same color (red) and had inboard engines. His wife and neigbors never realised. I have used his theory and have had a new bike (modern) every year since 2000, they have all been black. Too many old bikes for the wife to bother to count. Also, she has her shed for all her stuff (crap), and I have my shed which is generally a no go zone for anyone without permission, (wife & children include)!
Cheers,
K