VibranceGUI, a program on Windows that adjusts the colouring of your games as it's sent to your screen is quite popular and there's a similar project available for Linux. Now it's also not just for NVIDIA.
On Linux, the main project just named 'Vibrant Linux' is open source under the MIT license and available on GitHub. However, it currently only supports NVIDIA. That should hopefully not be the case for much longer, as there's now a fork with vibrantLinux AMD which as the name suggests also implements it for AMD hardware. This new fork should work with: Radeon RX 5700 XT, Radeon RX 5600 XT, Radeon VII, Radeon RX Vega 56, Radeon RX 580, Radeon RX 470, Radeon R9 270 and possibly more GPUs.
The developer does state clearly they plan to upstream the changes to the main project, "once this was tested on more hardware and polished".
We do often miss out extra tools like this on Linux, but gradually we're seeing more appear as more people switch to Linux for some gaming. Just like how MangoHUD appeared, which gives us a real sweet game overlay and benchmarking abilities that recently added OpenGL support in addition to Vulkan.