FAA and graphic design

[BAROBA]

Hi all,
Does anyone know about any rules the FAA has on graphics on and in an aircraft?
I think the most obvious are all those warningstickers, but also the size of the N-numbers.
https://www.faa.gov/quick_reference/ isn't really helpful.
Also the signs and stuff ( stickers?) on the inside are quite welcome.
I don't think anyone here works on interiors of businessjets and such?

Kind regards,

Rob

 

[TomS]

For N numbers. I think you want this (specifically § 45.23-29):

https://www.govinfo.gov/content/pkg/CFR-2017-title14-vol1/xml/CFR-2017-title14-vol1-part45.xml

 

[TomcatViP]

From my mem, registration markings size are 30cm on tail upper section or fuselage sides and 50cm under the port wing.