add missing color.* to win32.mak
Fixed VC projects (again) after the addition of colored output to DMD
Merge pull request #3713 from Orvid/fixMSVCProjectsAgain

Fixed VC projects after the addition of colored output to DMD
Merge pull request #3712 from WalterBright/win32-color

[BLOCKER] add missing color.* to win32.mak