EMERGING MARKETS-Colombian peso rises after central bank signals support
By Bru** Federowski SAO PAULO, Feb 22 (Reuters) - The Colombian peso strengthened to a two-week high on Monday after the central bank signaled it is ready to support the currency to avoid additional price pressures. Colombia's central bank an**unced late on Friday it will auction $500 million in dollar call options whenever the currency falls 3 percent from its 20-day moving average, down from the previous 5 percent trigger. Analysts cheered the bank's willingness to act but said th