Is there a color photography magazine that would be considered the equivalent of lenswork ?
Good question. There are very few magazines oriented toward photographs and photographic art, rather than gear. This is what Aperture should
be about, but unfortunately the magazine got increasingly bizarre and post-modern over its many years under Michael Hoffman, and its current editorial direction is (if possible) even worse. JPG varies with the issue, but seems way too self-consciously hip and fashion oriented. And Camera Arts has become just awful—lots of precious, overly manipulated digital images with emphasis on the intentionally bizarre.
The best current source for color work IMHO is actually View Camera
magazine. Each edition is split between black & white and color, but there is intelligent discussion of both technical and artistic issues, and some of the color work is simply gorgeous. You don't need to shoot large format to learn from it.