Thats unfortunate. What kind of colors would work for you? I want to make future games more accessible for colorblind, so yes an extra option is probably the way to go
I suffer from the most common color blindness. Red/Green color blind. I have issues differentiating:
Yellow from green if it’s a light green
Brown from green if it’s a dark green
Orange from red occasionally
And shading in general is pretty rough.
I wouldn’t be able to tell you what colors are used in this game. For a completely color oriented game, I would go with very distinctly different colors. I did a color game for this jam and did very bright red, yellow, and blue. This should help with the majority of colorblind users.