y te has pintado la sonrisa de carmín
[Caption 32, Disputas>La Extraña Dama>2]
You'll note that Perales also sings "Y te has pintado la sonrisa de carmín". In this case carmín refers to lipstick, so the phrase translates as "And you have painted a lipstick smile". Carmín can also refer to the color crimson (aka carmine), and sometimes to a type of wild rose. Lipstick, aside from carmín de labios, is also known as lápiz de labios. Bear it in mind next time you find some on the collar, yours or otherwise.
(Did you know that collar, in Spanish, is the same word as for neck: cuello?)