Describe yourself: what colour are your eyes? Is your hair straight or curly? Are you blond or dark-haired?, etc.
I am tall and thin. I have long and straight blond hair and light-coloured eyes. Excellent
I am tall and thin. I have long and straight blonde hair and light-coloured eyes.
blond - male hair colour
blonde - female hair colour
We would never say 'light coloured' - we would say 'blue' or 'green' etc.
blonde. The above comment is not quite accurate. In French 'blonde' is female and 'blond' is male but in English the spelling is always 'blonde.' The US version for male and female is 'blond.'
Usually you would say the colour of your eyes. If they are light you would say they are light blue, light brown, etc.