Multicolor Chocobos

What's this thing about airship shadow? Never heard of it, possibly a detailed explaination, please

Here's the RGB conversion into hex of my lightblue chocobo:
AD 35 63 0C 00 00 80 62 00 00 80 51 20 4F 20 7F
40 4A 39 67 FF 7F 40 40 E0 59 DF 57 DF 73 E3 6C

After i was doing math manually for a while(to convert RGB into decimal), when i realized at a certain point that i did an error, i got sick of that waste of time and i built a C++ program... to do that much faster that me
a very simple program... you write the RGB colors(values from 0 to 31) and the
program converts them into a decimal value, then you'll have to convert it into hex on your
own(don't forget to swap the pair of hex bytes you obtain, after you made the conversion into hex, the usual little endian shitty rule, you know... ;[ )

if you want, i linked here my program: (for Windows system, dunno if it works even in other systems...)
http://www.mediafire.com/download/dnme4e...ecimal.rar
there are exe and source code files inside.

PS. the hex i posted follows the order of Chocobo's colors in SNES palette editor program, dunno if you have to reverse even the order of colors... i doubt it, anyway.