Portal: Colors is a modification for Portal 2 you play as a prototype robot that is to be tested for its abilities and performance such as symbol and color recognition but each prototype has their problems!!
Here I am showing you the particles with Aperture 2, and maybe I'll put out an alpha build of Sortal.
English: This is a 3D Model from Sortal. German: Dies ist ein 3D-Modell aus Sortal