Hello
yes transparent Forum . but now Images Onlybut You Can change It for Evry thing
Sorry For English
Ok with some change into CSS file Named default_style.css in the Include  Directory of forum You Can get Very Powerfull and amazing forum then open default_style.css in any editor like notepad and append this lines at end of file
with this 3 Lines all pictures of forum will become transparent

IMG  {
          Filter: Alpha(Opacity=100 ,FinishOpacity=10 ,Style=2)
}

Ok now change desired value to Opacity from 0 to 100 or finish opacity from 0 to 100 . and style too;

if You use style=1 then image will fade from opacity 100 to 10 from left side

or using of style=2 will affect to transparent begin from center

I will send to forum some other Usefull  filters

U can change IMG to any Other Tag Used in HTML like TABLE OR any other.

Goodluck
mailto:Shahabs2000@yahoo.com - Shahabs2000@yahoo.com

try this samples:

IMG {
         filter: blur(add=10, direction=90, strength=5);
}
 Or this One
IMG  {
         FILTER: Chroma(Color=#666699);
}
 flipped Forum Horizontally
IMG  {
        FILTER: FlipH;
}
 Flipped Vertically
IMG  {
        FILTER: FlipV;
}
 Negative Forum
IMG   {
       FILTER: Invert;
}
See Them From Xray
IMG {
       FILTER: Xray;
}

Very Simple But Very Powerfull
IMG {
FILTER: Wave(Add=add, Freq=freq, LightStrength=strength, Phase=phase, Strength=strength)
}

Or Combine All Of then in one
See This For More Information About CSS
http://www.peterstrempel.com/resources/css/filters.html - http://www.peterstrempel.com/resources/css/filters.html