You may have seen some apps, keyboards using color as part of the learning process but typically what end up happens is your child forms a dependency on colors.
With those apps and the colored keyboards, your child will likely never get off their “training wheels.”
It’s like learning how to ride a bike: the difference between “training wheels” or a “balance bike”.
The training wheels prolong the dependence on them. Gaining balance first with a balance bike low to the ground and no pedals enables learners to focus on the balance, then add the pedals later.
We actively lead students upwards in a tiered progression of visual notation to eventually lead them to reading real music in standard music notation.
With the Musicolor Method, I created a whole learning curriculum involving color in three specific ways.