{blackbabes} Venus Williams -- Car Thieves With Big Mouths Get Arrested

The guy who jacked Venus Williams' Fiat 500 was quick to confess when cops pulled him over Saturday in L.A. ... but he then played a very short game of catch me if you can.

Car thief Gabriel Vella ran a red light near the Staples Center ... which caught the attention of the men in blue.

An officer approached the vehicle and Vella instantly copped to driving a car he had stolen from a West L.A. neighborhood -- so he was promptly cuffed and placed on the curb.

That's when Gabriel stood up ... AND BOLTED!!

The officer chased him down, backup arrived and Vella was cornered in an alley a few blocks away.

Here's the weird part of the story. According to the police report, Venus never reported the car stolen.

Thieves with big mouths get caught.

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