hybrids with sophronitis background (in fact any art-shade hybrid) change color not by temperature, but by light intensity and/or alkalinity level
This is possible to se even on species. Cattleyas with good light exposure are more darker than the same clones exposed to "normal" amount of light.
On coeruleas strong light usually ruin the blue color, an on albescens make it to produce some "pink".
hope this help
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