'Summer Palace' is a light lavender or lilac color.
Here's what the Lily Garden has to say:
‘Summer Palace’ () is our own strain of lovely, long flowered and tremendously fragrant pink trumpets! The colors vary in intensity but are always truly pink. Cool weather and dappled shade deepen the color.
4 feet and taller, July.
I bought some through the PNWLS and then when they bloomed last year, I bought more. They are delicious trumpets....a Must have for every garden