一、对比图
二、颜色数组
let systemColors: [UIColor] = [
.systemRed,
.systemGreen,
.systemBlue,
.systemOrange,
.systemYellow,
.systemPink,
.systemPurple,
.systemTeal,
.systemIndigo,
.systemBrown,
.systemMint,
.systemCyan,
.systemGray,
.systemGray2,
.systemGray3,
.systemGray4,
.systemGray5,
.systemGray6,
.tintColor,
.label,
.secondaryLabel,
.tertiaryLabel,
.quaternaryLabel,
.link,
.placeholderText,
.separator,
.opaqueSeparator,
.systemBackground,
.secondarySystemBackground,
.tertiarySystemBackground,
.systemGroupedBackground,
.secondarySystemGroupedBackground,
.tertiarySystemGroupedBackground,
.systemFill,
.secondarySystemFill,
.tertiarySystemFill,
.quaternarySystemFill,
.lightText,
.darkText,
.groupTableViewBackground
]