有色无胆

to be perverse and suggestive towards the opposite sex, but shrinking back when provoked to act on it / to have perverted thoughts but no guts to actually do it / to be all talk and no action

to have; there is / (bound form) having; with; -ful; -ed; -al (as in 有意[you3 yi4] intentional)

colored / non-white / non-ferrous (metals)

color / CL:種|种[zhong3] / look / appearance / sex

(coll.) color / used in 色子[shai3 zi5]

not to have / no / none / not / to lack / un- / -less

gall bladder / courage / guts / gall / inner container (e.g. bladder of a football, inner container of a thermos)