for coloring, I believe v2, v4 and BW is the best in my eyes. But overall these look great. Except the v3, the red looks too much, like overcolored kind of way.
Ver2 is really awesome bro. However, the black and white is kinda Cool to use to.
I guess in my opinion, the picture doesn't suit the color, Emotions vs Color does play a big part.
Nevertheless, keep up the good work.
I really think the color scheme of v4 it looks the best in my opinion. Though the color of the bottom right corner seems somewhat out of place. Good work man!