I'm not sure, but since 'Aka' mean 'Blood red' and 'Bara' means 'Rose' It'd probably be AkaBara. (well technically that would be "blood red rose")
oabara
青いバラ (aoi bara) would mean "Blue Rose".
'Chiisai bara.'
The phrase 'bright rose' would be expressed as 明るいバラ (akarui bara) in Japanese.
aoi ryuu
あおいりゅ (aoi ryuu) is Japanese for blue dragon.
The Japanese created a blue rose.
I don't know what you mean by spell, but it would be kuroi bara. Kuroi is the adjective form of black and bara means rose.
rose in Japanese : bara
'Kirei na bara' 美しいバラ ('utsukushii bara')
血のばら色の一族
watashi no aoi sokkusu wo mikakemasen deshitaka? have you seen my blue socks