As black as it is, Heathers has the same theme as the Ringwald/Cusack movies.
( ( As ( black ( as ( it is ) ) ) ) ( , ( Heathers ( ( has ( ( the ( same theme ) ) ( as ( the ( Ringwald/Cusack movies ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN As) (NP (NP (JJ black)) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ is)))))) (, ,) (NP (NNP Heathers)) (VP (VBZ has) (NP (NP (DT the) (JJ same) (NN theme)) (PP (IN as) (NP (DT the) (NNP Ringwald/Cusack) (NNS movies))))) (. .)))
As dark as it is, Heather's has the samebtheme as Ringwald/Cusack movies 
( As ( ( dark ( as ( it ( ( is , ) ( ( Heather 's ) ( has ( ( the samebtheme ) ( as Ringwald/Cusack ) ) ) ) ) ) ) ) movies ) )
(ROOT (PP (IN As) (NP (ADJP (JJ dark) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ is) (, ,) (SBAR (S (NP (NNP Heather) (POS 's)) (VP (VBZ has) (NP (NP (DT the) (NN samebtheme)) (PP (IN as) (NP (NNP Ringwald/Cusack))))))))))) (NNS movies))))