TFP is reading, and so are we all.
That is why they changed the ore shapes, above ground. A while back, it was found that many, could not see where the ore was because
of color. So they changed the shapes.
Maybe an alternate High contrast set of icons, can be set as an option. In the game folder there is ItemIcons, 5127 to be exact, It you go through it
You can adjust the hue or submit them in a downloadable file in the mod section or to BFT2020 or pretty much anyone that like to add mods, it could become a useable mod to help others. That's part of the reason they exported them there. This is one of the best mod friendly games.