only with the red and yellow bits system
It's called System-X
But what of the wallets? What would they say?
I agree, those bonnets are beautiful! The color ones are currently available on ebay.de for between 40 (for a 'coloured in' one) and 65 Euro, so the re-release of a white one would annoy a few sellers!
Yes, why don't they reuse old parts? Good point. Perhaps the moulds have deteriorated to the point of being unusable? A typical mould lasts for 100,000, I read on Wikipedia.