Slightly Stuck... 16V Petrol Xsara Cam Sprocket Spacers

[addo]

SC calls these "pinion hubs".

We have one tagged blue, one marked in beige! I cannot find mention of the beige anywhere. Would it be fair to assume it's an emissions re-timing on the inlet cam, as most exhaust spacers seem to be blue?

The lads are desperate to get this back together within 24 hours, and the apprentice who pulled it down without marking stuff is away...

Thanks, Adam.