Surname Rainbow ... need help with first!!

Me and my other half are expecting this year and currently dont know the gender. However every name we come up with just doesnt sound right. The babies surname will be [name_f]Rainbow[/name_f] as thats our family name.

‘Blank’ [name_f]Rainbow[/name_f]

Such a hard surname to name with!!
We love unique names but some names just dont sound right with such a unique surname.

Any ideas would be great!

[name_f]Alice[/name_f] [name_f]Rainbow[/name_f]
[name_f]Dorothea[/name_f] ‘[name_f]Dolly[/name_f]’ [name_f]Rainbow[/name_f]
[name_f]Olivia[/name_f] [name_f]Rainbow[/name_f]
[name_f]Louise[/name_f] [name_f]Rainbow[/name_f]
[name_f]Mariella[/name_f] [name_f]Rainbow[/name_f]
[name_f]Marybeth[/name_f] [name_f]Rainbow[/name_f]
[name_f]Beatrice[/name_f] [name_f]Rainbow[/name_f]

[name_f]Georgina[/name_f] [name_f]Rainbow[/name_f]
[name_f]Lucia[/name_f] [name_f]Rainbow[/name_f]
[name_f]Saskia[/name_f] [name_f]Rainbow[/name_f]
[name_f]Morwenna[/name_f] [name_f]Rainbow[/name_f]
[name_f]Gwen[/name_f] [name_f]Rainbow[/name_f]

idea= you’re stuck with surname, so think of name that is sweet, lovely, wonderful, non-wordy - basically ignore surname, but do not use word names.

[name_f]Celine[/name_f] [name_f]Rainbow[/name_f]
[name_f]Cerys[/name_f] [name_f]Rainbow[/name_f]
[name_f]Sunniva[/name_f] [name_f]Rainbow[/name_f]
[name_f]Rowena[/name_f] [name_f]Rainbow[/name_f]
[name_f]Anya[/name_f] [name_f]Rainbow[/name_f]
[name_f]Anouk[/name_f] [name_f]Rainbow[/name_f]
[name_f]Gaia[/name_f] [name_f]Rainbow[/name_f]
[name_f]Ione[/name_f] [name_f]Rainbow[/name_f]
[name_f]Amadea[/name_f] [name_f]Rainbow[/name_f]
[name_f]Eulalie[/name_f] [name_f]Rainbow[/name_f]
[name_f]Thyra[/name_f] [name_f]Rainbow[/name_f]