Documentation is always important even when we're living a condition, because our experience is unique and we cannot pretend to speak for a whole. We can use ourselves as an inspiration of course, but researching the topic is always good, especially since, sometimes, we don't even fully understand our own condition and can have prejudices or misconceptions about it. It is also the occasion to learn more, discover, open, think, and try to understand.
As for your other comic, without criticizing the drawings once more, I think the concept is cute, but so far we're not seeing where you're going with the story, it feels kinda vague. The page 6 of first chapter, for instance, doesn't make any sense, it's a completely unrelated scene, and if it's a flashback we see nothing happening in it that might give us a clue as to why we're suddenly in a different place with different character while the narration goes on.
The narration is a nice thing, but I would advice proofreading yourself (not for typos here but) to figure if what you wrote really makes sense and is purposeful. Like, when the text says:
"Imagine seeing only in grays for the rest of your life. You can't,
can you? Well, that's the life I was cursed (or is it blessed?) with."
This brings up some questions to the reader:
-Does the girl used to be able to see colors? The first sentence suggests it, but the last denies it, because life is granted at birth, not later on.
-How can anyone possibly think of seeing in greyscale as a blessing? Unless it has some side-effect like being able to see in the dark due to a miraculous replacement of cones by rods, allowing to see luminosity better; it's hard to imagine how someone could enjoy such a handicap while knowing they're missing a whole sensorial experience. I can't speak of them as a voice for the whole of sight-impaired people, but all those I spoke with were rather frustrated about this aspect of their life. Color-blind people for instance can have big issues figuring if a fruit is good or not based on the color, or to use a map on which they can't discern the colors of the different lines.
This is what I meant by checking if the text makes sense. As for the purpose, while it's nice to take the time to build the atmosphere, it's important that the reader knows where we're heading. A story is basically a situation in which there is a problem that has to be solved. In your comic, at first we understand that the issue will be about a color-blind girl. Then she can suddenly can see colors: she has no more problem! We're free to stop reading and say "and she lived happily ever after". You don't want a situation without problem without the end, there must always be something hooking our curiosity. Grow mystery about the second girl before having the colors appear so we might want to know more about it, or have something happen that prevents us from closing the tab. Here the first girl is just idly following the other one without even knowing why she's doing so. If she doesn't know where she's going and why, same for us and it isn't in human nature to be driven by shallow feels unless we're in a bad mood, numb and lost, following the track set by our feet... But well, readers are rarely ever like this, most of them make the effort to read so they can be entertained. They want something going on, they want to know why things are happening.
There are few things as infuriating as watching a show without understanding why character X speaks to Y and goes to this or that place. Here we're understanding that the first girl is troubled, but well, since her problem is already solved, it's harder to care for the action anymore. We didn't have time to grow any feeling for her in so few pages.
You might write your script and describe to yourself while which action is happening, what is the goal and how you intend the reader to react. Triggering interest and emotions is a hard quest, but worth the fight.