Looking back at all the western & medieval re-releases the colors were accurate but there were no klickies . The prices were not too outrageous
That's what makes me think they will re-issue in the original colours - I can only think of the Victorian Car 6420 re-issued in green and Victorian Truck 6349 in green and white that were different. The park fence was reissued in the paler cream, but I think the Victorian Mansion 5301 was still in production then, so it would have matched that.
I wouldn't have expected the figures, except that they have begun to include them in re-issues/Plus range.
I'd expect 5300 to be at least £200-250, since the blue dollshouse 70205 was £160 (I didn't actually realise that had been cancelled already!)