The sunlight, piercing through the branches, turned the auburn of her hair to quivering gold. 
( ( ( ( ( The sunlight ) , ) ( piercing ( through ( the branches ) ) ) ) , ) ( ( turned ( ( the auburn ) ( of ( her ( hair ( to ( quivering gold ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN sunlight)) (, ,) (VP (VBG piercing) (PP (IN through) (NP (DT the) (NNS branches)))) (, ,)) (VP (VBD turned) (NP (NP (DT the) (NN auburn)) (PP (IN of) (NP (PRP$ her) (NN hair) (S (VP (TO to) (VP (VB quivering) (NP (NN gold))))))))) (. .)))
When the sunlight pierced through the branches, her hair turned a darker shade of red.
( ( When ( ( the sunlight ) ( pierced ( through ( the branches ) ) ) ) ) ( , ( ( her hair ) ( ( turned ( ( a ( darker shade ) ) ( of red ) ) ) . ) ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (DT the) (NN sunlight)) (VP (VBD pierced) (PP (IN through) (NP (DT the) (NNS branches)))))) (, ,) (NP (PRP$ her) (NN hair)) (VP (VBD turned) (NP (NP (DT a) (JJR darker) (NN shade)) (PP (IN of) (NP (NN red))))) (. .)))