Forgive me if I'm misremembering, but you're colourblind, right?
Thought you might be interested in this short video from Sakurai on his experience with trying to accomodate for it.
Oh right, I'm reminded of a video I saw years ago looking at The Explorers games and some of their excellent usage of leitmotifs. Thought you might want to watch it, in case you already haven't.
I'd post it in the Music thread, but spoilers for the Explorers game abound here.
You're not alone! Unless that's your account.
(not sure if the embedding isn't working or its just my machine, but just in case: https://twitter.com/K1ttensocks/status/1005547154881040384)
When you walk through a storm
Hold your head up high
And don't be afraid of the dark
At the end of the storm
There's a golden sky
And the sweet silver song of a lark
Walk on through the wind
Walk on through the rain
Though your dreams be tossed and blown
Walk on walk on with hope in your heart
And you'll never walk alone
You'll never walk alone.