Maybe it was this week in May, but I felt these were the most colorful of the hummingbirds observed.
Best viewed in 'original' size.
Nikon D800
,AF-S VR Nikkor 70-200mm f2.8G with TC 2.0 E II 1/250s f/7.1 at 570mm iso2800
DX Image Cropped 4x6" Landscape at 300 dpi and Size Reduced for Internet Viewing
full exif