Breakdown of Me gustaría teñirme el pelo de castaño.
de
from / of
me
to me / me (direct object)
gustar
to like
el pelo
the hair
Questions & Answers about Me gustaría teñirme el pelo de castaño.
Why do we use Me gustaría here instead of Me gusta?
Me gustaría is the conditional form of the verb, meaning "I would like." It is used to talk about wishes, desires, or to make polite requests. If you used Me gusta here (Me gusta teñirme el pelo), it would change the meaning to "I like dyeing my hair" as a general habit, rather than something you want to do right now.
Why is me attached to the end of teñir to make teñirme?
Teñir means "to dye." Because you are dyeing your own hair, you use the reflexive pronoun me to show that you are doing the action to yourself. Since teñir is in its infinitive (unchanged) form, Spanish rules allow you to attach that pronoun right onto the very end of the word.
Why does the sentence use el pelo (the hair) instead of mi pelo (my hair)?
In Spanish, you almost always use definite articles (el, la, los, las) instead of possessives (like mi or tu) when talking about body parts or hair. Because you already used the pronoun me in teñirme, it is completely obvious to a Spanish speaker whose hair is being dyed!
Why is there a de before the color castaño?