I have tweeted Andy Park, Marvel Studios Director of Visual Development & Concept Artist, who worked on Captain Marvel and this is what he has had to say:
@CarrotLethal: @andyparkart Hello, I've got a quick question you might be able to answer. How does Monica know how to use the designer on Vers' suit? Thanks!
@andyparkart: I assume it was more Carol letting her have fun with it. The ability of the suits was for camouflage purposes so I’m sure the alien tech allows for intuitive color adjustments rather than Carol having to scroll through specific colors. So the suit can adapt to Monica’s shirt
@AH_AdamHughes: I just assumed the suit has an “I feel lucky” button, like the Google home page
@andyparkart: Woah! I never even knew about that button! But yes.. her suit has the Kree equivalent of that button
Considering this it would appear that three things were going on:
- The suit was intuitive enough that it was easy for Monica to see what to do.
- The suit had a "I'm feeling lucky" button and so Monica didn't necessarily choose the colours rather than the suit picked random ones.
- Monica didn't necessarily chose the final colours, rather the suit itself adapted to her t-shirt.