I think Chris explained well what I mean. Just a minor point:
 >   li pa vu'u mo'e le jai sela'u le pixra cu blanu
>   1 minus the quantity by which the picture is blue.
It should read:
        li pa vu'u mo'e le jai la'u blanu be fai le pixra
Here {jai la'u} is working as a SE, and I think we want {la'u}, not
{sela'u}.
 co'o mi'e xorxes