Colour aimbots are not conventional in ava as there is no way to decypher between the colour of a wall and that of a nearby head. Colour aimbots work when games have stand-out colours, like chams and the such, games like ava use dark, hi-def, colours that may be present on your gun and your face at the same time.
Summary: without it determining the difference between a nearby wall and a nearby enemy head, there is no practical use for a colour-bot.