Everything, whether it´s the Cap suit or the new Green Lantern suit or even the Thor suit - which I confess I have a few more issues with - shows the same thing: these costumes are being adapted to work on the screen, of course not always with good results, but the more fanboys keep struggling with wanting literal interpretations of what was made to work on the comic book page, as art, and doesn´t translate to live-action, the more frustrated they will be. If they can´t live with it, stick to the comics and forget the movies, it´s that simple. The funniest part is when they say "I´m okay with changes, but THIS ONE is too radical", cuz you hear that about every movie costume, regardless to the actual degree of difference, to a point where it´s impossible to tell what some fans think is a radical change or not, cuz apparently anything can be, and that´s where the real danger lies.
The dirty little secret about comic books that some fanboys insist to be completely blind to is artists can cheat reality in comics, far more than you can cheat in live-action. They don´t have to deal with real volumes, real textures, real colors, therefore they can draw these suits as second skin to muscular bodies, not worry about textures, draw primary colors in a world where all the colors are made up and can look anyway you want, and the result looks good on the page.
For film, all these things need to be adjusted, cuz interaction with real sets and real people is far more unforgiving: even in the closest suits, colors need to be darker/more subtle, the suits need muscle paddings and silkscreens to portray the comics muscle definition and avoid wrinkles, the actual practicality of the suit in situations that look much more real than they do in art needs to be adressed. That´s the diffference between good and bad changes: whether they have a storytelling/characterization point or not. This is done everytime and need to be done, and yet everytime they want a guy to wear something that wasn´t created for film to look exactly like it on screen and expect it to look as good as it does in comics, which it will never do. And then b**** about how Hollywood doesn´-t treat comics right, and gives studios the perfect excuse to say they´re impossible to please, therefore they can do whatever the hell they want.
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As for your sig, roach, yeah, the Adam West is the most faithful, which is why on film it doesn´t convey ANY of the darkness and mystery of Batman, and looks like a grown man wearing a silly pijama, and is completely ineffective for any remotely serious take on the character.