Colours are indeed langauge because they hold in information about us and the type of energy they carry .Each color has unique vibrational rate and frequency in same way as each word is composed by different letters .Everthing around us is a color and this color gives us clue which we can use for communication and understanding of properties and associations in same way as language help us to link relative ideas and share them .
Artistic people not always think only with words sometimes they think in colors and shapes ,also shades and dimensions .Language is way to express inner reality so do colors and shapes .
Sadly ,because we are trained since kids to use primary our left brain we have lost the connection with our right brain that is responsible about this relations and the creativity .
If you feel in your heart that it is a language with its own right and you can understand it and express yourself using it then go ahead and use it .What is pleasent to our heart is what is the most sufficated tool for expression that we can possibly can use .Everything around us carry information but it is shared in different ways that the primary human ways ,sadly we assume that our way is the only one way right and possible .
Be yourself and follow your heart and gut feeling ,without fear that you will be laught at or appointed for fool and freak .
We have to remember that most invention came to exist first in the mind of someone who always has been clasificicated as "crazy " visionary .This people with their ideas shaped in different way and chanced our world ,never the less .:)
Everything can be magic if you can see and perceive in few levels of perception in same way .Nothing is just something and if it is it is because that is how far our understanding can stretch .We need to start thinking out of the box and try to understand the other people world and the easiest way to do that is to try to use thier methods and see if we can adopt them to be useful to us too .:)
Colors are magic that are interwined within us ,that are shining bright or dull with every our sad or happy thought ,with every every ours good or bad emotion .
Shine your colors bright and change the world .:)
Also you may want to read a bit more for colortherapy and for aura soma healing method .Also colors are dicussed in physics and their lenght of wave and frequency .There is much more to them that most of us are aware and i am so happy someone actually had unvented a language using them .Also colors can be used and are used in bissness ,hospitals and places to promote certain behavior ,which is also very valid for words .
I hope that helps and explains things to you .