The 2blending" as swandy wrote, is ignoring the colors.
From the Photos Help: https://help.apple.com/photos/mac/1.2/?lang=en#/pht5c38b77c5
If you’re not getting the results you want, you can copy pixels from another part of the photo and apply them to the blemish. Press the Option key while you click an area that has the texture you want, then use the retouch tool to apply the change. Control-click the image and choose “Clear manual Retouch source point” to stop copying pixels from the area.
The Retouch tool is copying the texture, when you option click a source. By dragging across the area you will copy the pattern of edges, but not the color.
For example:
In the picture below I sampled the center of the rose blossom, then retouched the lower left corner. The retouched area is now showing the outlines of the petals, but the color is still green and not pink.
