First, make a bitmap file that's either 64x64, 128x64, 112x80, 256x32 or 192x48 (others are possible but I don't know the formula so you might as well just stick with these because they're good enough). Remember that the first dimension is width, so if it's 256, you'll have an extremely long decal.
Second, make your image in there. Whatever it is, some pot reference, a picture of a pot leaf, or some nude bichzzzz. After you're done, go in the colors menu and reduce the colors to 256. This is what it looks like on Paint Shop Pro:
You have to edit the palette (in Paint Shop Pro there's an "edit palette" option in the colors menu). This is what that menu looks like in Paint Shop Pro:
As you can see, the very last color on the palette is a clean blue. That's the transparent color. It HAS to be blue, and it HAS to be the the last little square on there. You just click on the square (or double click) and it'll bring up a thing that lets you edit that color. You just pick blue. You also have to make sure that none of the other color boxes are blue.
However, this is probably the part you'll have some trouble with. Sometimes you'll still end up with just a blue area where it should be transparent, after you make the decal. There's a way you can fix this (I think!) if that's what happens. You should first set your transparent color to another clean color, like plain yellow, and make sure it's not the last palette color box. Then you just draw your transparent areas as yellow, and then afterwards you make the last palette box blue, pick that color, and replace all the yellow with that blue. And that should probably work. It's not like I'm an expert here.
Here comes the "complicated" part, although this is really pretty easy. Rename your bitmap to "pldecal." (For the retards, DON'T PUT THE QUOTES AND PERIOD IN THE NAME OF THE FILE, DUH!!!!!) You download this zip file, unzip it, copy (you don't want to lose it in case you mess up or something) your bitmap into the folder. Then you run the .bat file (the one with the program window with the big yellow gear in it), and it should automatically run the two programs in there, and make a pldecal.wad file. That's your color decal. You replace the pldecal.wad files in your cstrike or tfc or valve folders/directories with the color pldecal.wad that you just made (and for the newbies, directory is another word for folder on your computer). Then you go into a game, wait a minute so your logo gets sent off and downloaded, and then spray it to see if it works. If it doesn't, e-mail me and I'll see what the problem is, but only if the problem is in the instructions itself. Otherwise, it's probably something you did, and don't bother e-mailing me because I'll ignore it, and laugh at what a moron you are.
Unrelated words of warning: make sure it's not someone ELSE giving you the contents of the above zip file, because since they are programs, people can edit them to implant viruses. Not that they would, but it is possible if someone wanted to play a "prank" on you (nice prank, assholes). Or they could edit the .bat file to screw with your computer. The contents of the .bat file are really just a couple commands that, when you run the file, simply activates those programs and puts in the commands to make the wad file instantly. If you want to check and see the .bat file's commands, just right click on it and pick "edit." It should have this in it:
makels . pldecal pldecal.ls
qlumpy pldecal
That's all that should be in there.
-- just helping to spread paranoia --
Anyway, my site should be rife with hits! I can't wait to get a special "thank you" e-mail from Clanpages for increasing their traffic so much and their ad revenues go up so they can afford to upgrade our damn slow ass message board.
Remember, if I missed anything important, e-mail me, or IM me on AIM (bottom of the page).
AIM name: Neptune Salad
Address: creexul@yahoo.com
Or whatever is on the FRONT page.