Custom coloring system

[callimuc]

I wanted to ask if it´s possible to have a custom coloring system. So I want to get rid of using this.colors[0],this.colors[1], ... and create my own system instead of that.

An example:
After some researches I have figured out that Bomy Island used/planned to use such a system with single body parts (extra shoes spritesheet, body spritesheet, ....) and for every single body part they had extra colors.
Sadly it seemd like they had to upload tons of files for the body parts in several colors.
I also want to try to do such a similar system, but I was wondering if I could have like 1 file, "find" a RGB, colors hex or HSV and change it into an other RGB, colors hex or HSV. Just like the colors changing in the default body system.
This also could give me the option to set more colors than just 5 at once.