Pictures of a Simpsons-yellow Xbox 360 began leaking out last spring and details were later revealed that only 100 were made to promote the upcoming movie and no, you can’t buy one.

But you can win one. One chance ends tomorrow. The official Xbox site is giving one away (along with a trip for two to the Los Angeles premiere on July 27). To enter, send an e-mail to xlmail@microsoft.com with the subject line “Simpsons Movie Premiere”

Five more boxes will go to winners of Xbox.com’s Cloning Clyde sweepstakes. This is more involved. You’ll need to Register your gamertag before July 17, and then play a multiplayer game of Cloning Clyde to enter. You’ll receive one sweepstakes entry for each day you play. Winners will be notified on July 29. Official rules HERE.

Another chance ends July 31 through JetBlue, the “Official airline of Springfield.” The Xbox isn’t even the grand prize or first prize. It’s the second prize. Deadline to enter JetBlue’s contest is midnight July 31. Random drawing set for August 3.

At MySpace, if you Simpsonize your profile, you could win the mega-grand prize, which includes the Xbox and so much more. (Don’t forget to create your own avatar. Like mine, on left?). I couldn’t find details on when this contest ends though.

And, of course, there is 7-Eleven, which teamed up with the cartoon to turn a dozen stores into Kwik-E-marts. My editor took his kids to one in Los Angeles and said there was a line to get in. Apparently, according to AdWeek, from July 16 to 23, 7-Eleven is inserting ‘Scratch N’ Win’ games in The New York Post.