NEW YORK (Standard&Poor's CreditWire) Feb. 25, 1999--Standard&Poor's today raised its rating on Colorado Housing Finance Authority's $364.33 million multifamily FHA-insured mortgage bonds and taxable multifamily FHA-insured mortgage bonds to double-'A'-plus from double-'A'. In addition, Standard&Poor's assigned its double-'A'-plus rating to the authority's $25.77 million multifamily housing insurance mortgage revenue bonds series 1999A-2 dated Feb. 1, 1999 due Oct. 1, 2040. The bonds are scheduled to sell March 8, 1999. The outlook has been revised to stable from positive. The upgrade reflects: -- The strength of the FHA-insured mortgage loans under the parity resolution as evidenced by the strong performance of the consolidated cash flows; -- Stand-alone 1999A cash flows demonstrating sufficient revenues to cover