Answer

In the Name of Allah, Most Gracious, Most Merciful. 

All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.

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In this fatwa:

It is permissible to wear colored contact lenses as long as they are not worn to deceive or allure others.

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Answering your question, Dr. Muhammad Salama, PhD, Islamic Studies in English, Associate Professor at the Faculty of Islamic Sciences al-Madinah International University (Mediu), states:

Colored contact lenses have the same Shariah ruling as other adornments. They are basically permissible.

Almighty Allah says in the Quran what means “Say: Who is it that has prohibited the adornments of Allah, which He has brought forth for His servants…” (Al-Araf 6:32)

But colored contact lenses may not be used to deceive or allure others as commonly practiced by a large segment of their users. Such usage is undoubtedly forbidden.

Almighty Allah knows best.