How long did you take to realize the picture is in black and white? Did you see it right away?

My brain sees it in colours that it is used to seeing: variable types are in purple, operators are in indigo, and numbers are in turquoise. What about you?

I am also interested whether this phenomenon is somehow connected with experience on Codeforces and/or this color scheme, i.e. are people having less experience with CF/CodeBlocks/white color schemes seeing black&white immediately?

P. S. The above mentioned effect is far more pronounced for me when I see the picture on a mobile, thus the title.