Hello, this is AM’s speech, I know this suggestion has been requested pretty frequently from others people, but it’s really a good idea to make your walls become colorable so it wouldnt look too bland with same color wall over and over again.
Positive:
-Once you can color wall, you can create a colorful or creative wall theme for each room or house on your own styles.
Negative:
-People may can abuse it by coloring it in inappropriate way
But overall, I believe that adding a colorable wall will brings more positive results than negative result.
“but what about colorable sign, you can replaced with that”
-Yes it does sometimes work, but I prefer to colored the entire walls to save a props to build something more details than placing signs and coloring it.