When I convert 0.gfx from EESDK/Data/Clouds/Layers to .bmp, bmp file has got blue and gray colors, but when I preview 0.gfx I see that transparent is used. How did you achieve this? I have cloud texture with purple background and I convert it in Converter Tool with Color Key on, but I haven't got any transparent and I don't know what should I do.

to color key to work you must have exactly purple color set (rgb 255,0,255)

but fur smooth alpha clouds you need to have alpha channel in the image properly set, and then don't use "color key"

Ok thanks. I find also another way. A create color and alpha texture and create one .gfx in Material Editor and it looks pretty good too