California Penal Code Section 12556
(a) No person may openly display or expose any imitation
firearm, as defined in Section 12550, in a public place.
(b) Violation of this section, except as provided in subdivision
(c), is an infraction punishable by a fine of one hundred dollars
($100) for the first offense, and three hundred dollars ($300) for a
second offense.
(c) A third or subsequent violation of this section is punishable
as a misdemeanor.
(d) Subdivision (a) shall not apply to the following, when the
imitation firearm is:
...
(13) A device where the entire exterior surface of the device is
white, bright red, bright orange, bright yellow, bright green, bright
blue, bright pink, or bright purple, either singly or as the
predominant color in combination with other colors in any pattern, or
where the entire device is constructed of transparent or translucent
materials which permits unmistakable observation of the device's
complete contents. Merely having an orange tip as provided in
federal law and regulations does not satisfy this requirement. The
entire surface must be colored or transparent or translucent.
