Don't be too hard on Krusty. He dislikes anything he didn't do himself. I did find his "unrealistic" comment funny, since I used a picture of real smoke to make it.

To answer some of Chilli's questions & some others' comments, I'll explain what I did. The plane fire & smoke effect consists of 15 .bmps which control the colors and 15 alpha .bmps which control the shape and transparency.
This was just a quick 3 minute experiment, so I kept the default alpha .bmps and only changed the color .bmps. Alphas work in balck & white. Anything in the .bmp which is black is totally transparent, anything white shows the solid color.
So making the smoke and/or fire more transparent is simply a matter of making the white parts or the alpha .bmp shades of gray. This will change it to semi-transparent.
I did this just on a whim to see what it would look like, and even used the same new smoke .bmp over & over to save time. Now that I see there is some interest, I will go back and do a more thorough job using different smoke .bmps and see how it turns out. I'll also play with the fire too. It looks kind of funny with the default fire. Updated pics to come.
Thanks all for putting up with my lil experiments I do from time to time. I do like getting the feedback, whether good or bad. It helps steer me in the right direction.
