No worries, and no pressure. :)
For the time being, I've done some quick hack on top of my modpack, just in case it's helpful:
data.raw["item"]["iron-ore-chunk"]["icons"][2].tint = {a = 0.8,r = 144,g = 24,b = 8}
data.raw["item"]["asteroid-iron-ore"]["icons"][2].tint = {a = 0.8,r = 144,g = 24,b = 8}
data.raw["item"]["copper-ore-chunk"]["icons"][2].tint = {a = 0.8,r = 0,g = 77,b = 59}
data.raw["item"]["asteroid-copper-ore"]["icons"][2].tint = {a = 0.8,r = 0,g = 77,b = 59}
data.raw["item"]["uranium-ore-chunk"]["icons"][2].tint = {a = 0.8,r = 70,g = 98,b = 0}
data.raw["item"]["asteroid-uranium-ore"]["icons"][2].tint = {a = 0.8,r = 70,g = 98,b = 0}
Doesn't quite match-up fully, but at least is the correct shade if I squint a bit. We'll see, it'll take me some time until I get to the Asteroid Mining in non-cheaty way in current playthrough. :)
Best regards,
Branko