BlockCheck.lua

--Make two variables for your two colors

for i=1, 10 do --go 10 times
    if turtle.compareDown()== true then
--If the block below matches the block in your inventory add one to that variable

        else
-- if it doesn't match the block below add one to your second variable

        end
-- Go forward
end

--replace Red and Green with the names of your variables
print("Red = "..red.. " Green = ".. green)