- Open Window > Color class manager
- Look to opened window
"Previ..." is displayed instead of "Preview" (Actual also fot Textblock style manager).
White color icon isn't seen because background is also white.
Preview should be dispayed at the top
Background should be a bit grey (248;248;248), like at the user guide -> https://phab.enlightenment.org/w/projects/eflete/0.7.0_tizen/ Color classes section