The word 'bright-colored' is a compound formed from 'bright' and 'colored.' 'Bright' comes from Old English 'beorht,' meaning 'shining' or 'luminous,' and 'colored' is the past participle of 'color,' from Latin 'color,' meaning 'hue' or 'appearance.'

'Bright' and 'colored' were combined in English to form the compound adjective 'bright-colored,' describing something with vivid or intense colors.

Initially, it simply described something with a bright color, and this meaning has remained consistent in modern usage.