Megustalaplaya,
+1 to the the previous comments about the pictures. Looks from here that it fits you well but I'm no expert :-). You should get it properly fit to avoid issues related to pain in your back or knees and also to be sure that your bike is a 50cm. The color of this Lexa model is beautiful. Love the contrast of the handlebar tapes with the rest of the bike. I have the Lexa (green one) and the handlebar tapes are white but I'm going to change them to bright green soon. Let us know how it goes.
Mariela
'12 Trek Lexa SLX