Is it a condition for a woman to wear an abaya and a khimar when she leaves her house, and what is the ruling on a woman leaving her house in colorful clothes with patterns on them?

When a woman leaves her home or is in the presence of non-mahram men, it is obligatory for her to observe the شرعي (Shar'i) hijab. The Shari'a has not specified a particular type of clothing for this, but rather has laid down conditions that must be met by it. Similarly, the Shari'a has not stipulated a specific color for the hijab. Thus, it is permissible for a woman to go out in colored clothes, provided that their colors or patterns are not provocative or eye-catching.