The main reason for posting this photos is just my curiosity to see how color photos look like in grayscale.
The first one is an Easter egg in my living room (it's not the real egg just a gift I bought once, somewhere...).

and the second is autumn in forest, pic I shot in autumn, a year ago.

More photos:
Color Challenge - Macro Tuesday
MyPictureDay Submission - Morning Flowers Run
Running Between Flowers
Going Up
Morning Run