Hi Bluesky! Here are some options how Arno Schmidt might have named this app:

Rainlightsky
Goldsoakedsky
Redetchedsky
Porcelainsky
Graygrainedsky
Candyredsky
Dreamvioletsky
Castironsky
Foliagepatternedsky
Yellowwashedsky
Whiteembroideredsky
Depletedredfrozensky
Moderatelyeffervescentsky