Think you misunderstood my question. I'm using ewww image optimizer already for image smushing. But my question is relating to the original uploaded images sRGB color profile not being included when these images that are being generated by your plugin:
rt_media_thumbnail, rt_media_activity_image, rt_media_single_image, rt_media_featured_image
So Safari etc don't know how to display them. This makes the colors all out of whack. Doesn't matter to most people but since my site is for photographers they typically care a lot.