Learn Portuguese (Portugal): O quarto cor-de-rosa é pequeno.

Cor-de-rosa literally translates to "color of rose". In Portuguese, several colors are named by comparing them to things in nature and use this hyphenated structure.

If "quarto" is masculine, why does "cor-de-rosa" end in an "a"?

Unlike most adjectives, cor-de-rosa does not change to match the gender of the noun. Because it literally means "color of rose", the word rosa stays feminine, even when describing a masculine noun like quarto.

Why do we use é instead of está for "is"?

É comes from the verb ser, which is used for permanent characteristics. Since a room's size is a fixed physical trait, we use ser. If we were talking about a temporary state, like the room being warm or messy, we would use a form of estar.

Why does the color come after the word for bedroom?

In English, we put the descriptive word before the noun ("pink bedroom"). In Portuguese, adjectives generally come after the noun they describe, so the structure here is quarto cor-de-rosa (bedroom pink).