颜色
Cmd Markdown 公式指导手册里是这样写的：
使用 \color{颜色}{文字} 来更改特定的文字颜色。
更改文字颜色 需要浏览器支持 ，如果浏览器不知道你所需的颜色，那么文字将被渲染为黑色。
对于较旧的浏览器（HTML4 与 CSS2），以下颜色是被支持的：
| 输入 | 显示 | 输入 | 显示 |
|---|---|---|---|
| black | \(\color{black}{text}\) | grey | \(\color{grey}{text}\) |
| silver | \(\color{silver}{text}\) | white | \(\color{white}{text}\) |
| maroon | \(\color{maroon}{text}\) | red | \(\color{red}{text}\) |
| yellow | \(\color{yellow}{text}\) | lime | \(\color{lime}{text}\) |
| olive | \(\color{olive}{text}\) | green | \(\color{green}{text}\) |
| teal | \(\color{teal}{text}\) | auqa | \(\color{auqa}{text}\) |
| blue | \(\color{blue}{text}\) | navy | \(\color{navy}{text}\) |
| purple | \(\color{purple}{text}\) | fuchsia | \(\color{fuchsia}{text}\) |
对于较新的浏览器（HTML5 与 CSS3），额外的 124 种颜色将被支持：
输入 \color {#rgb} {text} 来自定义更多的颜色，其中 #rgb 的 r g b 可输入 0-9 和 a-f 来表示红色、绿色和蓝色的纯度（饱和度）。
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例子：
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\begin{array}{|rrrrrrrr|}\hline \verb+#000+ & \color{#000}{text} & & & \verb+#00F+ & \color{#00F}{text} & & \\ & & \verb+#0F0+ & \color{#0F0}{text} & & & \verb+#0FF+ & \color{#0FF}{text}\\ \verb+#F00+ & \color{#F00}{text} & & & \verb+#F0F+ & \color{#F0F}{text} & & \\ & & \verb+#FF0+ & \color{#FF0}{text} & & & \verb+#FFF+ & \color{#FFF}{text}\\ \hline \end{array} -
显示：
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例子：
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\begin{array}{|rrrrrrrr|} \hline \verb+#000+ & \color{#000}{text} & \verb+#005+ & \color{#005}{text} & \verb+#00A+ & \color{#00A}{text} & \verb+#00F+ & \color{#00F}{text} \\ \verb+#500+ & \color{#500}{text} & \verb+#505+ & \color{#505}{text} & \verb+#50A+ & \color{#50A}{text} & \verb+#50F+ & \color{#50F}{text} \\ \verb+#A00+ & \color{#A00}{text} & \verb+#A05+ & \color{#A05}{text} & \verb+#A0A+ & \color{#A0A}{text} & \verb+#A0F+ & \color{#A0F}{text} \\ \verb+#F00+ & \color{#F00}{text} & \verb+#F05+ & \color{#F05}{text} & \verb+#F0A+ & \color{#F0A}{text} & \verb+#F0F+ & \color{#F0F}{text} \\ \hline \verb+#080+ & \color{#080}{text} & \verb+#085+ & \color{#085}{text} & \verb+#08A+ & \color{#08A}{text} & \verb+#08F+ & \color{#08F}{text} \\ \verb+#580+ & \color{#580}{text} & \verb+#585+ & \color{#585}{text} & \verb+#58A+ & \color{#58A}{text} & \verb+#58F+ & \color{#58F}{text} \\ \verb+#A80+ & \color{#A80}{text} & \verb+#A85+ & \color{#A85}{text} & \verb+#A8A+ & \color{#A8A}{text} & \verb+#A8F+ & \color{#A8F}{text} \\ \verb+#F80+ & \color{#F80}{text} & \verb+#F85+ & \color{#F85}{text} & \verb+#F8A+ & \color{#F8A}{text} & \verb+#F8F+ & \color{#F8F}{text} \\ \hline \verb+#0F0+ & \color{#0F0}{text} & \verb+#0F5+ & \color{#0F5}{text} & \verb+#0FA+ & \color{#0FA}{text} & \verb+#0FF+ & \color{#0FF}{text} \\ \verb+#5F0+ & \color{#5F0}{text} & \verb+#5F5+ & \color{#5F5}{text} & \verb+#5FA+ & \color{#5FA}{text} & \verb+#5FF+ & \color{#5FF}{text} \\ \verb+#AF0+ & \color{#AF0}{text} & \verb+#AF5+ & \color{#AF5}{text} & \verb+#AFA+ & \color{#AFA}{text} & \verb+#AFF+ & \color{#AFF}{text} \\ \verb+#FF0+ & \color{#FF0}{text} & \verb+#FF5+ & \color{#FF5}{text} & \verb+#FFA+ & \color{#FFA}{text} & \verb+#FFF+ & \color{#FFF}{text} \\ \hline \end{array} -
显示：
维基百科的数学公式教程里是这样写的：
语法：{\color{颜色}表达式}
作者实测：在部分浏览器中，上面的语法可能是错误的（只将表达式的第一个字符着色），\color{颜色}{文字}的语法才是正确的。例如：
{\color{Red}abc}显示\({\color{Red}abc}\)
\color{Red}{abc}显示\(\color{Red}{abc}\)
支持色调表：
\({\displaystyle \color {Apricot}{\text{Apricot}}}\)
\({\displaystyle \color {Aquamarine}{\text{Aquamarine}}}\)
\({\displaystyle \color {Bittersweet}{\text{Bittersweet}}}\)
\({\displaystyle \color {Black}{\text{Black}}}\)
\({\displaystyle \color {Blue}{\text{Blue}}}\)
\({\displaystyle \color {BlueGreen}{\text{BlueGreen}}}\)
\({\displaystyle \color {BlueViolet}{\text{BlueViolet}}}\)
\({\displaystyle \color {BrickRed}{\text{BrickRed}}}\)
\({\displaystyle \color {Brown}{\text{Brown}}}\)
\({\displaystyle \color {BurntOrange}{\text{BurntOrange}}}\)
\({\displaystyle \color {CadetBlue}{\text{CadetBlue}}}\)
\({\displaystyle \color {CarnationPink}{\text{CarnationPink}}}\)
\({\displaystyle \color {Cerulean}{\text{Cerulean}}}\)
\({\displaystyle \color {CornflowerBlue}{\text{CornflowerBlue}}}\)
\({\displaystyle \color {Cyan}{\text{Cyan}}}\)
\({\displaystyle \color {Dandelion}{\text{Dandelion}}}\)
\({\displaystyle \color {DarkOrchid}{\text{DarkOrchid}}}\)
\({\displaystyle \color {Emerald}{\text{Emerald}}}\)
\({\displaystyle \color {ForestGreen}{\text{ForestGreen}}}\)
\({\displaystyle \color {Fuchsia}{\text{Fuchsia}}}\)
\({\displaystyle \color {Goldenrod}{\text{Goldenrod}}}\)
\({\displaystyle \color {Gray}{\text{Gray}}}\)
\({\displaystyle \color {Green}{\text{Green}}}\)
\({\displaystyle \color {GreenYellow}{\text{GreenYellow}}}\)
\({\displaystyle \color {JungleGreen}{\text{JungleGreen}}}\)
\({\displaystyle \color {Lavender}{\text{Lavender}}}\)
\({\displaystyle \color {LimeGreen}{\text{LimeGreen}}}\)
\({\displaystyle \color {Magenta}{\text{Magenta}}}\)
\({\displaystyle \color {Mahogany}{\text{Mahogany}}}\)
\({\displaystyle \color {Maroon}{\text{Maroon}}}\)
\({\displaystyle \color {Melon}{\text{Melon}}}\)
\({\displaystyle \color {MidnightBlue}{\text{MidnightBlue}}}\)
\({\displaystyle \color {Mulberry}{\text{Mulberry}}}\)
\({\displaystyle \color {NavyBlue}{\text{NavyBlue}}}\)
\({\displaystyle \color {OliveGreen}{\text{OliveGreen}}}\)
\({\displaystyle \color {Orange}{\text{Orange}}}\)
\({\displaystyle \color {OrangeRed}{\text{OrangeRed}}}\)
\({\displaystyle \color {Orchid}{\text{Orchid}}}\)
\({\displaystyle \color {Peach}{\text{Peach}}}\)
\({\displaystyle \color {Periwinkle}{\text{Periwinkle}}}\)
\({\displaystyle \color {PineGreen}{\text{PineGreen}}}\)
\({\displaystyle \color {Plum}{\text{Plum}}}\)
\({\displaystyle \color {ProcessBlue}{\text{ProcessBlue}}}\)
\({\displaystyle \color {Purple}{\text{Purple}}}\)
\({\displaystyle \color {RawSienna}{\text{RawSienna}}}\)
\({\displaystyle \color {Red}{\text{Red}}}\)
\({\displaystyle \color {RedOrange}{\text{RedOrange}}}\)
\({\displaystyle \color {RedViolet}{\text{RedViolet}}}\)
\({\displaystyle \color {Rhodamine}{\text{Rhodamine}}}\)
\({\displaystyle \color {RoyalBlue}{\text{RoyalBlue}}}\)
\({\displaystyle \color {RoyalPurple}{\text{RoyalPurple}}}\)
\({\displaystyle \color {RubineRed}{\text{RubineRed}}}\)
\({\displaystyle \color {Salmon}{\text{Salmon}}}\)
\({\displaystyle \color {SeaGreen}{\text{SeaGreen}}}\)
\({\displaystyle \color {Sepia}{\text{Sepia}}}\)
\({\displaystyle \color {SkyBlue}{\text{SkyBlue}}}\)
\({\displaystyle \color {SpringGreen}{\text{SpringGreen}}}\)
\({\displaystyle \color {Tan}{\text{Tan}}}\)
\({\displaystyle \color {TealBlue}{\text{TealBlue}}}\)
\({\displaystyle \color {Thistle}{\text{Thistle}}}\)
\({\displaystyle \color {Turquoise}{\text{Turquoise}}}\)
\({\displaystyle \color {Violet}{\text{Violet}}}\)
\({\displaystyle \color {VioletRed}{\text{VioletRed}}}\)
\({\displaystyle \color {White}{\text{White}}}\)
\({\displaystyle \color {WildStrawberry}{\text{WildStrawberry}}}\)
\({\displaystyle \color {Yellow}{\text{Yellow}}}\)
\({\displaystyle \color {YellowGreen}{\text{YellowGreen}}}\)
\({\displaystyle \color {YellowOrange}{\text{YellowOrange}}}\)
＊注︰输入时第一个字母必需以大写输入，如\color{OliveGreen}。
例子
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{\color{Blue}x^2}+{\color{Brown}2x} - {\color{OliveGreen}1}\({\displaystyle {\color {Blue}x^{2}}+{\color {Brown}2x}-{\color {OliveGreen}1}}\)
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x_{\color{Maroon}1,2}=\frac{-b\pm\sqrt{{\color{Maroon}b^2-4ac}}}{2a}\({\displaystyle x_{\color {Maroon}1,2}={\frac {-b\pm {\sqrt {\color {Maroon}b^{2}-4ac}}}{2a}}}\)