@moradoprincipal: transparent; 
@placeholderscolor:#000000;


body,.formulariocontain,.imagenizquierda{ 
   background-color: @moradoprincipal; 
}

::-webkit-input-placeholder { color: @placeholderscolor; } /* WebKit */
:-moz-placeholder { color: @placeholderscolor; } /* Firefox 18- */
::-moz-placeholder { color: @placeholderscolor; } /* Firefox 19+ */
:-ms-input-placeholder { color: @placeholderscolor; } /* IE 10+ */