I use to have a SPI boost gauge with a factory green bulb which was a PERFECT match in color but the gauge itself was a POS. It was not accurate at all and the needle kept sticking to the face of the gauge. DOn't buy it but that's just my opinion.
All of my gagues match perfectly to my stock gagues...they are DEFI gauges. I have pics on my website...but they don't do justice for the gauges because the pics were taken at night...I am going to try and get better pics up of them shortly. http://home.talkcity.com/thepits/tt_6spd_black/index.html