in lib/prepare.js [632:673]
function colorPreferenceToComponents (pref) {
if (!pref || !pref.match(/^(#[0-9A-Fa-f]{3}|(0x|#)([0-9A-Fa-f]{2})?[0-9A-Fa-f]{6})$/)) {
return {
platform: 'ios',
reference: 'systemBackgroundColor'
};
}
let red = 'FF';
let green = 'FF';
let blue = 'FF';
let alpha = 1.0;
if (pref[0] === '#' && pref.length === 4) {
red = pref[1] + pref[1];
green = pref[2] + pref[2];
blue = pref[3] + pref[3];
}
if (pref.length >= 7 && (pref[0] === '#' || pref.substring(0, 2) === '0x')) {
let offset = pref[0] === '#' ? 1 : 2;
if (pref.substring(offset).length === 8) {
alpha = parseInt(pref.substring(offset, offset + 2), 16) / 255.0;
offset += 2;
}
red = pref.substring(offset, offset + 2);
green = pref.substring(offset + 2, offset + 4);
blue = pref.substring(offset + 4, offset + 6);
}
return {
'color-space': 'srgb',
components: {
red: '0x' + red.toUpperCase(),
green: '0x' + green.toUpperCase(),
blue: '0x' + blue.toUpperCase(),
alpha: alpha.toFixed(3)
}
};
}