Hi there,
Yes, my apologies, but I would prefer to keep topics like this in open-discussion, rather than hidden away by PM. I have received far too many emails about SWOS graphics since 1998...
Question 1
Palette info ... I remember there are a few different palettes that are used on the pitches... it changes 2-3 colours depending on the current "weather" - i've attached a file that contains "ice" and "muddy" palettes in iff format - this should suffice i think, although you can get any of the palettes simply by taking an action replay III picture of each pitch/weather in-game.
Question 2
The easier to answer - the reason the files are different sizes, is because there is a different number of tiles in each one! (its that simple)
But... so that anyone might be able to understand in the future, I will state some info here......
Each .MAP is a "strip" of graphics, with some header data (that I never managed to translate very well - i assume it "maps" the pitch) followed by a set of tiles each of size 16x16 (as I am sure you know from the above), each in RAW Interleaved format (iirc), 4 bitplanes (16 colours) and each of the respective heights you mentioned.... because the height determines the number of 16x16 tiles, this changes the overall file size.
You'll find the smallest file is the one used for the training pitch, because there are even fewer tiles required here.
i managed to make a program on the Amiga which loaded the tiles from the RAW file, and then made them into easy-to-manage tiles. I will see if I still have it anywhere in case the code is of use to you.