Fix: color changing logic for LightRays Background

[SergeDeGuzman]

The hexToRgb constant expects exactly 6 hex digits and when passed by an 8-digit string, it does not match and the function returns [1,1,1] which is white. Also, some WebGL/ogl code prefers typed arrays for uniform vectors, so it's safer to set uniform values as Float32Array. I replaced your hexToRgb with this function that supports #RGB, #RRGGBB, #RRGGBBAA. I find this minor bug when I'm making my portfolio website and I like to thank you for having this open source codes.

[DavidHDev]

Any component code change should be added to all 4 variants, meaning 4 files changed in this PR.

Please read CONTRIBUTING.md

[SergeDeGuzman]

I only changed a constant in content/Backgrounds/LightRays/LightRays.jsx

[DavidHDev]

@SergeDeGuzman this component lives under 3 other files as well, they all need to be kept in sync.