You've seen the recent rumours of a TI-84 calculator with a color screen, and now Tech Powered Math has gotten the official word from Texas Instruments that such a device is indeed coming, finally bringing the popular line of calculators out of the monochrome age. As those earlier reports have suggested, however, you'll have to wait until sometime in the spring of next year to get you hands on one, and pricing has yet to be confirmed -- the site says the MSRP "could" be in the neighborhood of $150, though. Apparently, one reason for the lack of specificity with a release date is that the apps from the older calculators aren't compatible with the new TI-84+ C, so Texas Instruments has