If you absolutely want some colour, here are two solutions with swapping rows and columns. One with vertical and horizontal rules, the other with only horizontal rules (built not using booktabs, as this leads to white spaces in coloured cells). The latter looks better, in my opinion:
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{geometry}
\usepackage{array, supertabular, makecell, hhline, cellspace, booktabs}
\setlength\cellspacetoplimit{4pt}
\setlength\cellspacebottomlimit{4pt}
\usepackage[table, x11names]{xcolor}
\usepackage{eqparbox}
\newcommand\blankcell{\multicolumn{1}{c|}{\cellcolor{white}}}
\begin{document}
\centering
\begin{supertabular}{| >{\columncolor{Burlywood1!80}}Sl|*{3}{Sc|}}
\cline{2-4}
\blankcell & \multicolumn{3}{Sc|}{Size}\\
\hhline{~|---|}
\rowcolor{DarkSeaGreen3}\blankcell & Small (<\,1cm) & Medium (1cm--10cm) & Large (>\,10cm) \\
\hline
\eqparbox{C1}{Lethal to\\ Operational Spacecraft} & (Usually) Not & Usually & (Almost) Always \\
\hline
Number in Orbit & Millions & \makecell{\textasciitilde\,500,000\\ in LEO} & \textasciitilde\,22,000 \\
\hline
Trackable & No & No & Yes\\
\hline
\eqparbox{C1}{ Produces Lethal Fragments \\When Impacting an\\ Operational Spacecraft} & No & Maybe & Yes -- 100\,s to 10,000\,s \\
\hline
\end{supertabular}
\vskip1cm
\begin{supertabular}{ >{\columncolor{Burlywood1!80}}Sl*{3}{Sc}}
\cellcolor{white}& \multicolumn{3}{Sc}{Size}\\
\hhline{~---}
\rowcolor{DarkSeaGreen3}\cellcolor{white} & Small (<\,1cm) & Medium (1cm – 10cm) & Large (>\,10cm) \\
\Xhline{0.8pt}
\eqparbox{C1}{Lethal to\\ Operational Spacecraft} & (Usually) Not & Usually & (Almost) Always \\
\hline
Number in Orbit & Millions & \makecell{\textasciitilde\,500,000\\ in LEO} & \textasciitilde\,22,000 \\
\hline
Trackable & No & No & Yes\\
\hline
\eqparbox{C1}{ Produces Lethal Fragments \\When Impacting an\\ Operational Spacecraft} & No & Maybe & Yes -- 100\,s to 10,000\,s \\
\Xhline{0.8pt}
\end{supertabular}
\end{document}
