[@booksmusicanime]
...kind of jumped over it again Book lol, it's now drawn from personality or anything like that... if need be look back at RomanAria, and Eklispe's posts back in the original rp on page 7. sense those two shown 2 prime examples, don't need to follow them but can use to get an idea of what i mean.

[@Rex]
To much for the magic color and meaning, it's not going to have that much stuff. it's basically the personality of your magic itself.
It's not called Mana in this world, just magic/magical energy.
you very much so messed up with the source of magic.
Magic will replenish itself in one's own Body when they rest, just like one's stamina would replenish when they take a break from exercising. at one point they can take energy that exists in stuff around and absorb it but that is advance magic to use.
Source of magic is where they draw their magic from once they go through the special ritual to allow magic to flow through them. Some people it can be like Vanes of energy that is throughout their body, it could be a specific shape at the core of themselves, etc....

[@Ancient Amen]
i like the concept of the personalities, yet they aren't going to entirely change his phyiscal abilities, just how he acts.
Magic color and meaning, doesn't relate to the person, it relates only to how the magic is. basically it's the magic's personality not his.
Interesting his source of magic being in his mind... does it take any specific kind of shape or form? i think yours is the closet to getting that line correct though need to be bit more specific is all, don't need to say that he transfers it from his mind to his hands, at one point they can do that with their entire bodies so there is no need for that.
Note: make sure you are not thinking he has access to any kind of magical energies yet. everyone only gets to start using magic after the ritual and even then it's somewhat slow process to learn and exhausting.