I purchased the Castanho and it is a beautiful color, not too light not to dark, it looks like maple.  The bed was easy to assemble, it is sturdy, really thick, solid wood with a modern look.  The person who assembled the bed was so impressed he decided to buy one for his daughter.  I am so pleased that I may buy another one like this for another room.  The quality is excellent and it has inspired me to continue to make other purchases now that I am decorating my home.  I highly recommend this bed.