fix regression from "Use a hidden variable to get the css vars from url"

[mcecchetti]

Compiler complains about unknown uint32_t type.

Signed-off-by: Marco Cecchetti [email protected] Change-Id: I690d89470bfdd977e7fa71957cdc118d9257b7b9

[mcecchetti]

Ah so the fix is wrong, I mean locally it works, but it seems not portable

[mcecchetti]

New version looks good