surfingkeys.js

settings.scrollStepSize = 90;

map('h', 'E');
map('l', 'R');
map('J', 'd');
map('K', 'u');
map('u', 'S');
map('U', 'D');
map('O', 't');
map('o', 'go');
map('f', 'af');

map('B', 'b');
mapkey('b', '#8Open a bookmark', function() {
    Front.openOmnibar(({type: "Bookmarks", tabbed: false}));
});

mapkey('s', 'Pause YT video', function() {
    document.getElementsByClassName('ytp-play-button')[0].click();
});

unmapAllExcept(['b', 'B', 's', 'o', 'O', 'f', 'h', 'l', 'J', 'K', 'u', 'U', '/', 'gg', 'G', 'j', 'k', 'i', 'r', 'x', 'X', 'v']);

Hints.characters = "asdfghjkl";
settings.modeAfterYank = "normal";
settings.hintAlign = "left";
settings.newTabPosition = "right";
settings.focusFirstCandidate = true;

addSearchAliasX('r', 'reddit', 'https://www.google.com/search?q=%s+site:reddit.com');
addSearchAliasX('y', 'youtube', 'https://www.youtube.com/results?search_query=%s');

Hints.style(`background: #37474F;
    color: #f0f0f0;
    font-size: 14px;
    border-radius: 3px;
    border: none;
    padding: 4px 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}
`);

Hints.style(`color-background: #37474F;
    background: #ccc;
    font-size: 14px;
    border-radius: 3px;
    border: none;
    padding: 4px 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}
`, "text");

// set theme
settings.theme = `
.sk_theme {
    background: #212121;
    color: #f0f0f0;
    font-size: 16px;
}
.sk_theme tbody {
    color: #fff;
}
.sk_theme input {
    color: #d9dce0;
}
.sk_theme .url {
    color: #2173c5;
}
.sk_theme .annotation {
    color: #38f;
}
.sk_theme .omnibar_highlight {
    color: #f0f0f0;
    background: tomato;
}
.sk_theme ul>li:nth-child(odd) {
    background: #323232;
}
.sk_theme ul>li.focused {
    color: #212121;
    background: #ccc;
}`;
// click `Save` button to make above settings to take effect.