That's a very tricky one. There are quite a few yellow moths around all looking almost the same, but are not even from the same family. I think this one is a Geometridae, Sterrhinae, Smicropus sp. Although it looks quite similar and is found in Columbia I do not think it is Smicropus laeta:
http://www.boldsystems.org/views/taxbrowser.php?taxon=Smicropus%20laeta
Might even be a not yet described species, as are much moths and butterflies in Colombia as well.
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