Scrub Tanager

The scrub tanager is found in the Andes of Colombia (all three cordilleras) down into Ecuador. Wikipedia has two sentences on it and a photo. Birds of the World, a subscription site, has substantially more. 

Scrub tanager at Tinamu Reserve. 

Males and females mostly look similar, except that females are duller. They are described as "relatively dull," compared to other tanagers, but I think they are beautiful. They have a rufous crown and upper neck, a gray-black mask, a silvery-blue upper back and underparts, a mixture of turquoise, blue, green and black on the wings and tail, and a light rufous-orange at it lores. 

Scrub tanager at Montezuma Rainforest Lodge.

I saw scrub tanagers at both Tinamu Reserve and Montezuma Rainforest Lodge, but only a few at both places.