Comment by CGMthrowaway

Thanks for the example. Devils advocate:

> You need to do tedious annotation. Worse even, you need to look at two places simultaneously: to the score and to the string of Roman numerals

The more work it takes to create your notation, the more useful information it contains. Developer-user tradeoff

> And worse still, all chords then look the same. The score itself becomes bland. Most of the time, if you aren't deep inside the jazz repertoire, there isn't that many alterations. So you'd mostly see the same four colors - root, minor third, major third, perfect fifth.

Isn't the same true for your current method? Only there are more colors of the rainbow to distract you from how bland it is :)