Math for Color class

[Be1zebub]

new metaevents support __unm, __add, __sub, __mul, __div, __lt, __le
new methods: :Invert(), :Copy(), :Normalize(), :GetNormalized()

[Kefta]

Could you give some examples/documentation that makes these operations defined and sensible for rgb colours?

[Be1zebub]

Could you give some examples/documentation that makes these operations defined and sensible for rgb colours?

arithmetic operators allows to write cleaner code, this is useful in complex code - eg for pseudo shaders (we dont have shaders api, so cope with rt & render.ReadPixel)
I actively use pseudo shaders in my projects, for example one of it implements bloom for some vgui elements
here are some examples how color math can be used:
https://gist.github.com/Be1zebub/66a16af468e2f2d7e2a9fc0dc9ee9311

[CornerPin]

Can you add functions like Add, Sub, etc. that modify the original color rather than create a new one? Vectors, angles and matrices already have these, so it would make sense for colors to have them too.

[CornerPin]

What is the use case of Normalize? Currently it just divides the color components by 255, i.e., if you ignore copying, it is equivalent to color / 255. Wouldn't clamping the components to the range of 0…255 make more sense for a function like this?