Table \[meancolors\] we list the average infrared photometric properties of field L dwarfs, and in Tables \[low-G\] and \[colorslow-G\] we list the infrared photometry and colors of low-gravity L dwarfs, respectively.

With a $J-K_{s}$ color of 2.52$\pm$0.03, 2M0355 is 0.8 mag redder than the average for L5 dwarfs, or nearly 4$\sigma$ from the mean color. A similar deviation from the mean of the subtype is seen among other low surface-gravity L$\gamma$ dwarfs listed in Tables \[low-G\]- \[colorslow-G\], but 2M0355 is the most extreme example (although we note that the L4 dwarf 2MASSJ1615+4953 shows very similar deviations in both its J-K$_{s}$ and W1-W2 colors). As discussed above, low surface gravity effects leading to a reduction in H$_{2}$ collision induced absorption is the likely cause for the extreme deviation. However we note that not all unusually red L dwarfs demonstrate low surface gravity spectral features; therefore this peculiarity alone is not conclusive about age (e.g. @Looper08).

In the same manner as Figure \[fig:jmk\] we compile WISE photometry of known field L dwarfs with photometric uncertainties $<$ 0.1, excluding subdwarfs and confirmed young objects, to calculate the mean $W1-W2$ color and corresponding standard deviation for spectral subtypes (again binned by 0.5 subtype) and 