I'm going to say I don't have a favourite colour because it really does depend. I really like the bright yellows of flowers in the spring - daffodils, crocuses, celandines and later buttercups, but I'd never wear that as clothes. It used to be my team colour in primary school, so it brings back happy memories as well.
To wear I tend to like dull colours (that don't show the dirt!), but turquoise and peach suit my skin tone better.
If I was going to buy a new car (unlikely) I realy fancy a metallic skye blue - the colour of a clear autumn or spring skye.
I love the way that nature mixes colours in an unlikely fashion - the bright peach of clouds in sunset
should clash with the blue skye but are just magic! Sycamore buds that are as bright as flowers and the red and yellow of virus infected leaves.