Brickset
“Casual LEGO fans reading this might wonder what's so special about the colour, which is officially called bright bluish green. As far as I know it's the only colour that's been retired and re-introduced, after a ten-year hiatus. The 3x scale brick is superficially the same... More as the red one but some piece substitutions have been necessary due to them not being available in teal: most notably the 2x2 round tile has been replaced with 4 1x1 quarter-tiles, which has bumped up the piece count considerably. It's an appealing GWP that makes a nice display piece, perhaps on your desk at work. It's not too 'childish' but would ably demonstrate your love of the brick!”
Full review at brickset.com