Research non-zero alpha values in the SPR color palettes

[rdw-software]

In the parser I found the following comment:

alpha: 255, // Shouldn't it always be ignored? // TODO only for <2.0?

This refers to the palette colors; various sources claim that alpha values for the indexed-color bitmaps are always ignored by the client. It remains to be seen whether this is actually true, though I'd need to see if there are any non-zero alpha values and check if/how the client interprets them.

I'd also be curious to see how they look if the alpha values aren't ignored. But that would require finding some where it isn't zero, or there'd be nothing to see after all.