stk-code_catmod/data/gfx/smoke_yellow.xml

<?xml version="1.0"?>
<particles emitter="point">

    <spreading angle="90"        />
    
    <velocity  x="0.003"
               y="0.0047"
               z="0.003"         />
    
    <material  file="smoke_yellow.png"  />
    
    <!-- Amount of particles emitted per second -->
    <rate      min="150"
               max="300"         />
    
    <!-- Minimal and maximal lifetime of a particle, in milliseconds. -->
    <lifetime  min="300"
               max="500"         />
    
    <!-- Size of the particles -->
    <size      min="0.6"
               max="0.9"        />

    <color     min="255 255 255"
               max="255 255 255" />

</particles>