\begin{table}%T6
\par
%\centering
\par
\caption{Inferred $(V-K)_0$ RGB colors at fixed magnitudes. }\label{t6}
\begin{tabular}{ccccc}
\hline\hline\noalign{\smallskip}
 & $(V-K)_{0}^{-5.5}$ & $(V-K)_{0}^{-5}$ & $(V-K)_{0}^{-4}$ & $(V-K)_{0}^{-3}$ \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
RGB-MP & $3.24\pm0.03$ & $3.03\pm 0.03$ & $2.69\pm 0.03$ & $2.44\pm 0.03$ \\
RGB-a  & $4.19\pm0.21$ & $3.83\pm 0.20$ & $3.27\pm 0.09$ & $2.87\pm 0.08$ \\ 
\noalign{\smallskip}\hline
\end{tabular}
\end{table}