Those handsets are customized by Mehmet Erkök, an industrial design lecturer from the Istanbul Teknik Üniversitesi’s Department of Industrial Product Design, Turkey. During his free, he plays around with mobile phones and customizes them to a different form. If I’m not mistaken the one with the blue screen was Nokia 3210 and the orange was Nokia 8210. The different forms of personalization include removing the keypad, adding new buttons. I like the Blue one, it looks robotic.