100%

this is why i write a lot of encoders. using other people's libraries can solve the problem also but very often they are general purpose solutions that are slow at doing something specific, or cumbersome.

if i was a painter i would have a big shelf full of pigment powders and paint bases and mix my own palette with little scales to measure up proportions and all that also.

if you are familiar with how color process printing works, you will understand that the gamut of colors available from a standard color set may not include patches of the spectrum and once you've seen side by side the same image rendered with those colors present, you understand the difference. 4 color CMYK can render most of the spectrum but there are 6 color schemes that include numerous other colors (like orange or purple or deep blue) and they also look more vivid.

so, yeah, reinventing the wheel, just talking about painting, is worth doing if you want to make something specific. these things can seem like gimmicks but they do add value to your product.