ColorTool system requirements state that you will need at least 4 GB of RAM. You will need at least 20 MB of free disk space to install ColorTool. An Intel Core 2 Duo E8400 CPU is required at a minimum to run ColorTool. The cheapest graphics card you can play it on is an NVIDIA GeForce 8200M G.
ColorTool will run on PC system with Windows XP or newer and upwards. Additionally it has a Linux version.