Yup. Mind, color is _really_ complicated. The math to calculate color spaces is completely non-obvious, the eye's reactions to colors is subtle, and the brain seems to interpret colors in interesting ways. (I remember at work, we needed to figure out why a thing was getting _more_ red as we shifted it into the blue spectrum... turns out that's why they call it ultraviolet.)
Huh? It's shades of yellow/green that we are best able to distinguish. We're not good at blue.