Let’s use this as a reference:
So you see, the extra colors I assume you can unlock after beating arcade mode with the respective character are the ones that have start+ written on them. However, the start button is random select on the character select screen. Because of that, you have to switch your color palette to the new color palette in order to use the new colors.
I suggest Capcom does away with the selecting what color palette you want. Instead, you should hold the respective button that would get you the new color. For example, hold Jab/LP to get new color 1. Hold Strong/MP to get new color 2. And so on.
You would just hold on to the button for just a few seconds, and then you can select your Super Art with whatever button you want. Hey, maybe Capcom can even put in a little “ding” noise or something to confirm you successfully selecting the new color.
Also, I’ve heard you can’t use the new color palette in online matches. Please fix this.