Wouldn't it have been cool that since the three skill types color's are the primary colors of the RGB light spectrum that if you somehow derived a color that was dependent on the amount of skills you leveled from each skill type, whether total level or just your current level so far? the color could be shown on your level progress bar or whatever. Resulting in a unique color for each character

I know it wouldn't be something that really does much, but i think it would be a cool thing, it would show which way your character was leaning towards too