\documentclass[a5paper]{seasonalletter}
\newcommand\sample[4]{%
\begin{SeasonalLetter}[season=#1,weekday=#2,paper=#3,label={#2 / #1}]
\SeasonalHeading{#4}
\SeasonalOpening{My dear friend,}
There is always a little room in the day for a letter.
This page keeps the ornament at the edges and leaves the words in the light.

The season chooses the colours and botanical motif. The weekday supplies its
own small emblem. These choices can be combined freely.
\SeasonalClosing{With affection,}{A.}
\end{SeasonalLetter}}
\begin{document}
\sample{spring}{monday}{plain}{Moonlit garden}
\sample{summer}{tuesday}{ruled}{The summer cabinet}
\sample{autumn}{wednesday}{grid}{Notes from the archive}
\sample{spring}{thursday}{plain}{The herbarium}
\sample{winter}{friday}{plain}{A winter evening}
\sample{autumn}{saturday}{ruled}{The traveller's journal}
\sample{summer}{sunday}{plain}{Letters in sunlight}
\end{document}